Common use of Rooftop Equipment Clause in Contracts

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant may, at its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;

Rooftop Equipment. Provided that Tenant complies with In addition to the terms of ----------------- this SectionPremises and for no additional charge, Tenant may, at its risk shall be entitled to install and expense, install a satellite dish and related communications maintain certain equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at a location approved by LandlordBuilding, --------- which including but not limited to supplemental HVAC equipment may be used solely by Tenant and its Permitted Transferees communications devices such as antenna or Permitted Sublessees. Before installing satellite dishes (collectively, the “Rooftop Equipment”), and to connect such Rooftop Equipment to the Premises. Tenant shall submit present plans for the installation of each piece of Rooftop Equipment to Landlord for its approval (review and approval, which approval shall not be unreasonably withheld, conditioned or delayed. Tenant shall be responsible for ensuring that all Roof-top Equipment complies with all applicable Governmental Requirements. 1. Tenant shall not place anything, or allow anything to be placed near the glass of any window, door, partition or wall which may, in Landlord's sole discretion) plans ’s judgment, appear unsightly from outside of the Project. 2. The Project directory shall be available to Tenant solely to display names and specifications which (a) specify in detail the design, location, size, and, their location in the case of a satellite dishProject, frequency of the Rooftop Equipment which display shall be as directed by Landlord and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good initial identification on such display at Landlord’s expense. 3. The Common Areas, including the sidewalks, halls, passages, exits, entrances, elevators and workmanlike manner stairways shall not be obstructed by Tenant or used by Tenant for any purposes other than for ingress to and in accordance with all Laws (egress from the "Legal Requirements"). If Landlord approves of such plansPremises, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennaebuilding conference room, or other transmission facility on the Building's roof or shared facilities elsewhere in the Building. Tenant shall lend its cooperation to keep such areas free from all obstruction and in a clean and sightly condition and shall move all supplies, furniture and equipment as soon as received directly to the Premises and move all such items and waste being taken from the Premises (other than waste customarily removed by employees of the Building) directly to the shipping platform at or about the time arranged for removal therefrom. The halls, passages, exits, entrances, elevators, stairways, balconies and roof are not for the use of the general public and Landlord may require shall, in all cases, retain the right to control and prevent access thereto by all persons whose presence in the judgment of Landlord, reasonably exercised; shall be prejudicial to the safety; character, reputation and interests of the Project. Neither Tenant nor any employee, invitee, agent or contractor shall go upon the roof of the project without the prior consent of Landlord or its designated representative, except in connection with the installation, inspection, maintenance or repair of any of Tenant’s rooftop equipment permitted hereunder. 4. The toilet rooms, urinals, wash bowls and other apparatuses shall not be used for any purposes other than that for which they were constructed, and no foreign substance of any kind whatsoever shall be thrown therein, and to the extent caused by Tenant screen or its employees or invitees, the Rooftop Equipment with a parapet expense of any breakage, stoppage or other screening device acceptable to Landlorddamage resulting from the violation of this rule shall be borne by Tenant. 5. Tenant shall maintain not cause any unnecessary janitorial labor or services by reason of Tenant’s carelessness or indifference in the Rooftop Equipment preservation of good order and screening device in good repair and conditioncleanliness. 6. Tenant shallshall not install or operate any heating or air conditioning apparatus which adversely effects the Building HVAC systems. 7. Tenant shall not bring upon, at its risk and expenseuse or keep in the Premises or the Project any kerosene, remove gasoline or inflammable or combustible fluid or material, or any other articles deemed hazardous to persons or property, excepting therefrom any such materials permitted by the Rooftop Equipment (including all wiring related thereto), within five days after Lease or use any method of heating or air conditioning other than that supplied by Landlord or provided for in the occurrence of any of the following events: (1) the termination of Lease or in Tenant's right to possess the Premises;’s approved tenant improvement plans.

Rooftop Equipment. Provided that Tenant complies with At any time during the Term, subject to the existing rights as of the date hereof and the terms of ----------------- this SectionLease, including this Section 2, Tenant maymay install one (1) satellite dish (the “Rooftop Equipment”) upon the roof of the Building. In no event shall Tenant create any roof penetrations in order to connect the Rooftop Equipment to the Premises (provided that Landlord shall make available to Tenant a commercially reasonable amount of the existing rooftop penetrations for Tenant’s use in connecting its Rooftop Equipment to the Premises). The physical appearance and all specifications of the Rooftop Equipment shall be subject to Landlord’s reasonable approval, the location of any such installation of the Rooftop Equipment shall be designated by Landlord, and Landlord may require Tenant to install screening around such Rooftop Equipment, at its risk Tenant’s sole cost and expense, install a satellite dish as reasonably designated by Landlord. Notwithstanding the foregoing, Tenant hereby agrees to attach any Rooftop Equipment to the roof in accordance with Landlord’s Building standard method therefor, so long as such Building standard is commercially reasonable. Tenant shall be responsible, at Tenant’s sole cost and related expense, for (i) obtaining all permits or other governmental approvals required in connection with the Rooftop Equipment, and (ii) repairing and maintaining and causing the Rooftop Equipment to comply with all applicable Laws. In no event shall Tenant permit the Rooftop Equipment to interfere with the Base Building or any communications equipment at the Building that is located on or in the Building prior to the installation of Tenant’s Rooftop Equipment (or reasonable substitutes therefor) or the use and wiring (collectivelyoperation of any Building helipad. In the event Tenant elects to exercise its right to install the Rooftop Equipment, then Tenant shall give Landlord prior notice thereof and Landlord and Tenant shall execute an amendment to this Lease covering the matters addressed in this Section 3, the "payment for installation costs of the Rooftop ------- Equipment", the installation and maintenance of such Rooftop Equipment, Tenant’s indemnification of Landlord with respect thereto, Tenant’s obligation to remove such Rooftop Equipment (and restore the roof to its previously existing condition) on upon the expiration or earlier termination of this Lease, and other related matters. Subject to Landlord’s reasonable rules and regulations (including, without limitation, Landlord’s reasonable notice requirements), Tenant shall be permitted to access the roof of the Building at a location approved by Landlordin order to install, --------- which equipment may be used solely by Tenant repair and maintain its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits Your cooperation in this matter is appreciated. Initially, the information provided by you in this Hazardous Materials Disclosure Certificate is necessary for the maintenance and operation Landlord to evaluate your proposed uses of the Rooftop Equipment while it premises (the “Premises”) and to determine whether to enter into a lease agreement with you as tenant. If a lease agreement is on signed by you and the Building and operate and maintain Landlord (the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto“Lease”), within five days after you are to provide an update to the occurrence of any information initially provided by you in this certificate, and obtain Landlord’s approval, before commencing a new Use (defined in Section 28.1.2 of the following eventsLease) of Hazardous Materials (as defined in Section 28.1.1 of the Lease), all as provided in Section 28.1.2 of the Lease. Any questions regarding this certificate should be directed to, and when completed, the certificate should be delivered to: Landlord: c/o Equity Xxxxxx 0000 Xxxxxx Xxxxx, Xxxxx 000 Xxx Xxxxx, XX 00000 Attn: Market Officer Phone: (1000) the termination 000-0000 Name of (Prospective) Tenant's right to possess the : Mailing Address: Contact Person, Title and Telephone Number(s): Contact Person for Hazardous Waste Materials Management and Manifests and Telephone Number(s): Address of (Prospective) Premises;: Length of (Prospective) initial Term:

Rooftop Equipment. Provided that Tenant complies with Subject to the terms of ----------------- this SectionSection 16.30, Tenant mayshall have the right to install, at its risk operate, maintain, repair and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") replace on the roof of the Building at Office Area a location satellite dish or antenna, a generator and air conditioning equipment required for its operations in the Premises, together with access to use of available Office Area shafts, conduits and risers to connect to such equipment (collectively, the “Rooftop Equipment”). There shall be no additional charges or fees payable by Tenant in connection therewith. Tenant shall not install any Rooftop Equipment until Landlord shall have approved by the size, location, weight and manner of attachment thereof, such approval not to be unreasonably withheld, conditioned or delayed. Tenant’s rights under this Section 16.30 shall be subject to all of the terms and conditions of this Lease, as well as the following additional conditions: (1) Tenant shall be solely and exclusively responsible for all costs, expenses and charges, of every kind, of installing, operating, maintaining, repairing, replacing, and removing the Rooftop Equipment and, except to the extent resulting from the negligence or willful misconduct of Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees Landlord shall have no liability or Permitted Sublessees. Before installing obligation in connection therewith. (2) If, in the reasonable judgment of Landlord, any electrical, electromagnetic, radio frequency or other material interference shall result from the operation of any of the Rooftop Equipment, Tenant shall submit agrees that Landlord may, at Landlord’s option, shut down Tenant’s equipment upon twenty-four (24) hours prior notice to Tenant, which notice may be electronic if given to Xxxxxxx Xxxxxxx or such other person as designed by Tenant in writing from time to time; provided, however, if an emergency situation exists, which Landlord for reasonably determines in its approval (which approval shall good faith discretion to be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of attributable to the Rooftop Equipment Equipment, Landlord shall immediately notify Tenant verbally, who shall act immediately to remedy the emergency situation. Should Tenant fail to so remedy said emergency situation, Landlord may then act to shut down Tenant’s equipment. Tenant shall indemnify Landlord and hold it harmless from, and Tenant waives, all reasonable out-of-pocket expenses, costs, damages, losses, claims or other liabilities arising out of said shutdown. Tenant agrees to cease operations (bexcept for intermittent testing on a schedule approved by Landlord) are sufficiently detailed until the interference has been corrected to allow for the installation reasonable satisfaction of Landlord. If such interference is caused by telecommunications equipment and has not been corrected to the reasonable satisfaction of Landlord within thirty (30) days, Landlord may require that Tenant immediately remove from the Roof the specific item of telecommunications equipment causing such interference. (3) Tenant shall, at its sole cost and expense, and at its sole risk, install, operate and maintain the Rooftop Equipment in a good and workmanlike manner manner, and in accordance compliance with all Laws electric, communication, and safety codes, ordinances, standards, regulations and requirements, now in effect or hereafter promulgated, of the Federal Government, including, without limitation, the Federal Communications Commission (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner“FCC”), maintain the Federal Aviation Administration (“FAA”) or any successor agency of either the FCC or FAA having jurisdiction over radio or telecommunications, and use of the state, city and county in which the Office Area is located. Tenant shall reasonably cooperate generally with Landlord and other carriers to permit the Office Area’s rooftop to be and remain in compliance with all FCC and OSHA rules and regulations relating to radio frequency emission levels and maximum permissible exposure. Except to the extent resulting from Landlord’s negligence or willful misconduct, neither Landlord nor its agents shall be liable to Tenant for any stoppages or shortages of electrical power furnished to the Rooftop Equipment in accordance with all Legal Requirements or the roof area because of any act, omission or requirement of the public utility serving the Office Area, or the act or omission of any other tenant, invitee or licensee or their respective agents, employees or contractors, or for any other cause beyond the reasonable control of Landlord, and Tenant shall obtain all consents and permits required not be entitled to any rental abatement for any such stoppage or shortage of electrical power. Neither Landlord nor its agents shall have any responsibility or liability for the installation conduct or safety of any of Tenant’s representatives, repair, maintenance and operation thereof; copies engineering personnel while in or on any part of all such permits and evidence of such consents must be submitted the Office Area or the roof area. (4) Landlord shall have no obligation to Landlord before Tenant begins provide any electricity or other utilities or services to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary be responsible for connecting the Rooftop Equipment to the Office Area’s utility systems and for the maintenance costs and operation expenses of all electricity consumed in connection with the Rooftop Equipment. (5) Tenant shall not make any changes, alterations, or other improvements on or to the roof of the Office Area without Landlord’s prior written consent in each instance, which consent, Landlord may withhold at its discretion; provided, however, in connection with the installation, operation, maintenance, repair or replacement of the Rooftop Equipment, Landlord’s consent shall not be unreasonably withheld, conditioned or delayed. (6) Tenant shall have no right of access to the roof of the Office Area unless Tenant has given Landlord reasonable advance notice and unless Tenant’s representatives are accompanied by a representative of Landlord. Landlord will make a representative available to Tenant (i) during Normal Business Hours upon reasonable advance notice and (ii) during emergencies, as soon as practicable (taking into account the circumstances) after receipt of a request from Tenant. (7) At the expiration or prior termination of this Lease, Tenant shall remove the Rooftop Equipment from the roof of the Office Area, and Tenant shall be responsible for the cost of repairing any damage to the roof of the Office Area caused by the installation or removal of the Rooftop Equipment while it is on or the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. exercise of Tenant’s rights under this Section 16.30. (8) Tenant shall maintain have no right to transfer or assign its rights under this Section 16.30, other than to a permitted assignee or sublessee of all or substantially all of the Premises. (9) To the maximum extent permitted by law, the Rooftop Equipment and screening device all other related installations shall be at the sole risk of Tenant, and except to the extent caused by negligent acts or willful misconduct by Landlord or its agents, employees or contractors, Landlord shall have no liability to Tenant in good repair the event that the Rooftop Equipment or any related installations are damaged for any reason. (10) The roof area shall be delivered to Tenant “as-is,” in its then condition and conditionLandlord shall have no obligation to prepare the roof or any portion thereof, for use by Tenant. (11) Tenant shall comply with all Legal Requirement and Insurance Requirements in connection with Tenant’s exercise of its rights pursuant to this Section 16.30. Landlord shall have the right, upon thirty (30) days’ notice to Tenant, to require Tenant to relocate the Rooftop Equipment to another area on the roof of the Office Area equally suitable for Tenant’s use. In such event, Tenant shall on or before the thirtieth (301h) day after Landlord gives such notice, relocate the Rooftop Equipment and Landlord shall reimburse Tenant for all reasonable costs and expenses incurred by Tenant in connection with said relocation and any resulting relocation of utility lines. In addition to the indemnification provisions set forth in this Lease (which indemnification provisions shall be applicable to the use by Tenant of the Rooftop Equipment), except to the extent resulting from the negligence or willful misconduct of Landlord or its agents, employees or contractors, Tenant shall, at its risk to the maximum extent permitted by law, indemnify, defend, and expensehold Landlord harmless from any and all claims, remove losses, demands, actions or causes of actions suffered by any person, firm, corporation, or other entity to the extent that the same arises out of or results from Tenant’s use of the Rooftop Equipment (including all wiring related thereto), within five days after and the occurrence of any of rights granted to Tenant and the following events: (1) the termination performance of Tenant's right to possess ’s obligations under this Section 16.30. EXECUTED as a sealed instrument in two or more counterparts by persons or officers hereunto duly authorized on the Premises;Date set forth in Section 1.2 above. BOYLSTON WEST LLC, a Delaware limited liability company By: Fenway Enterprises Boylston West LLC, Its Managing Member By: S&A Fenway Enterprises LLC Its Manager By: /s/ Xxxxxx X. Xxxxx Name: Xxxxxx X. Xxxxx Title: Manager DECIBEL THERAPEUTICS, INC., a Delaware corporation By: Name: Title: EXECUTED as a sealed instrument in two or more counterparts by persons or officers hereunto duly authorized on the Date set forth in Section 1.2 above. BOYLSTON WEST LLC, a Delaware limited liability company By: Fenway Enterprises Boylston West LLC, Its Managing Member By: S&A Fenway Enterprises LLC Its Manager By: Name: Title: DECIBEL THERAPEUTICS, INC., a Delaware corporation By: /s/ Xxxxxx X. Xxxxxxxx Name: Xxxxxx X. Xxxxxxxx Title: President & CEO

Rooftop Equipment. Provided that If Tenant complies with desires to use the terms roof of ----------------- this Sectionthe Building to install communication equipment to be used from the Premises, Tenant maymay so notify Landlord in writing (“Communication Equipment Notice”), which Communication Equipment Notice shall generally describe the specifications for the equipment desired by Tenant. If at the time of Landlord’s receipt of the Communication Equipment Notice, Landlord reasonably determines that space is available on the roof of the Building for such equipment, then Tenant, at its risk sole cost and expense, install shall have the non­exclusive right (it being understood that Landlord may grant, extend or renew similar rights to others) to install, maintain, and from time to time replace a satellite dish or antenna and related communications infrastructure and equipment and wiring (collectively, the "Rooftop ------- “Communication Equipment"”) on the roof of the Building at a location approved by LandlordBuilding, --------- which equipment may be used solely by Tenant and its Permitted Transferees provided that prior to commencing any installation or Permitted Sublessees. Before installing the Rooftop Equipmentmaintenance, Tenant shall submit (i) obtain Landlord’s prior written approval of the proposed size, weight and location of the Communication Equipment, the method for fastening the Communication Equipment to the roof, and any architectural screening as may be appropriate, which approval(s) may be granted or withheld in Landlord’s sole but good faith determination, (ii) such installation and/or replacement shall comply strictly with all applicable governmental laws, rules and regulations and the conditions of any bond or warranty maintained by Landlord on the roof, (iii) use the Communication Equipment solely for its approval personal internal use, (which approval shall be in Landlord's sole discretioniv) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency not grant any right to use of the Rooftop Communication Equipment to any other party, and (bv) are sufficiently detailed obtain, at Tenant’s sole cost and expense, any necessary federal, state, and municipal permits, licenses and approvals, and deliver copies thereof to allow for Landlord. Landlord may supervise or perform any roof penetration related to the installation of any Communication Equipment, and Landlord may charge the Rooftop Equipment cost thereof to Tenant. Tenant agrees that all installation, construction and maintenance shall be performed in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plansneat, Tenant ------------------ shall install (in a good responsible, and workmanlike manner), maintain and use the Rooftop Equipment in accordance using generally acceptable construction standards, consistent with all Legal Requirements and such reasonable requirements as shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to imposed by Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk sole cost and expense, repair any damage to the Building caused by Tenant’s installation, maintenance, replacement, use or removal of the Communication Equipment. The Communication Equipment shall remain the property of Tenant, and Tenant may remove the Rooftop Communication Equipment (including all wiring related at its sole cost and expense at any time during the Term. Tenant shall remove the Communication Equipment at Tenant’s sole cost and expense on or prior to the Termination Date. Tenant agrees that the Communication Equipment, and any wires, cables or connections relating thereto), within five days after and the occurrence of any installation, maintenance and operation thereof shall in no way interfere with the use and enjoyment of the following events: Building, or the operation of communications (1including, without limitation, other satellite antenna) or computer devices by Landlord or by other tenants or occupants of the termination Project or surrounding buildings. If such interference shall occur, Landlord shall give Tenant written notice thereof and Tenant shall correct the same within two (2) business days of receipt of such notice. Landlord makes no warranty or representation that the Building or any portions thereof are suitable for the use of a Communication Equipment, it being assumed that Tenant has satisfied itself thereof. Tenant shall protect, defend, indemnify and hold harmless the Indemnitees from and against claims, damages, liabilities, costs and expenses of every kind and nature, including attorneys’ fees, incurred by or asserted against Landlord arising out of Tenant's right to possess ’s installation, maintenance, replacement, use or removal of the Premises;Communication Equipment.

Rooftop Equipment. Provided that Tenant complies with shall have a non-exclusive right to use a portion of the terms of ----------------- this Section, Building’s roof in a location reasonably acceptable to both Landlord and Tenant mayfor installation and maintenance, at its risk Tenant’s sole cost and expenseexpense (subject to the Tl Allowance, install a if any), of (a) one satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") dish/antennae on the roof of the Building at a location approved (and reasonable equipment and cabling related thereto), solely in connection with Tenant’s Permitted Use of the Premises and not for the use by Landlordany third parties whatsoever, --------- which for receiving of signals or broadcasts (as opposed to the generation or transmission of any such signals or broadcasts) (all such equipment may be used solely by is defined collectively as the “Telecommunications Equipment”), and (b) HVAC equipment, conduit and other related equipment and hood venting, if and as allowed under the Tenant Improvements or as an Alteration (the “Ancillary Equipment”) (collectively, the Telecommunications Equipment and its Permitted Transferees or Permitted Sublesseesthe Ancillary Equipment are the “Rooftop Equipment”). Before Prior to installing the any Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail for the design, location, size, and, Rooftop Equipment in the same manner required for Tenant Improvements or Alterations, as the case of a satellite dishmay be. Landlord shall have the right to limit or require modifications to the amount, frequency location and/or the size of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves or any other aspect of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Landlord’s reasonable judgment. The Rooftop Equipment in accordance with all Legal Requirements shall, at Landlord’s discretion and at Tenant’s sole cost and expense, be screened from street view and shall obtain all consents and permits required for be within allowable structural load capacities of the installation and operation thereof; copies of all such permits and evidence of such consents must Building. There shall be submitted to Landlord before Tenant begins to install no cabling running across the Rooftop Equipmentrooftop. Tenant The Telecommunications Equipment shall thereafter maintain all permits necessary for not interfere with the maintenance and transmission or operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility equipment located on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment Equipment, at Tenant’s sole cost and screening device in good repair and conditionexpense. Tenant shall, at its risk and expense, shall remove the Rooftop Equipment upon the expiration or earlier termination of the Lease, and shall return the affected portion of the rooftop Page 28 Vancouver, WA and the Premises to the condition the rooftop and the Premises would have been in had no such Rooftop Equipment been installed (including reasonable wear and tear excepted, provided that the standard of acceptable normal wear and tear shall be determined as though no Rooftop Equipment had been located on the rooftop). Any and all wiring related theretowork on the roof or any portion thereof in connection with the installation, maintenance, repair and/or removal of the Rooftop Equipment shall be performed by a roofing contractor, approved in advance by Landlord, at Tenant’s expense and all work performed in connection with the Rooftop Equipment shall be performed in such manner as to not invalidate Landlord’s roof warranty (if any), within five days after the occurrence . Notwithstanding any review or approval by Landlord of any specifications, or the plans for installation, of Rooftop Equipment, Tenant shall remain solely liable for any damage to any portion of the following events: (1) the termination roof or roof membrane, specifically including any penetrations, in connection with Tenant’s installation, use, maintenance and/or repair of Tenant's right to possess the Premises;such Rooftop Equipment, and Landlord shall have no liability therewith. The Rooftop Equipment shall, in all instances, comply with all Applicable Laws.

Rooftop Equipment. Provided that Tenant complies In connection with the terms of ----------------- this SectionTenant’s Permitted Use, Tenant may, at its risk sole cost and expense, install a satellite dish and related communications operate (for Tenant’s own use and not for use by third parties or “for profit” services provided for the benefit of third parties) during the Term, venting stacks and mechanical equipment and wiring (collectively, hereinafter the "“Rooftop ------- Equipment"”) on the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit mutually acceptable to Landlord for its approval and Tenant (which approval hereinafter the “Installation Area”). The installation of such Rooftop Equipment shall be in Landlord's sole discretion) plans and specifications which subject to the following: (a) specify in detail Tenant shall not install or operate the design, location, size, and, in Rooftop Equipment until the case of a satellite dish, frequency final location of the Rooftop Equipment receives prior written approval from Landlord, which approval shall not be unreasonably withheld, conditioned or delayed. Without limitation to the generality of the preceding sentence, it shall not be unreasonable for Landlord to withhold approval if the location of any Rooftop Equipment if such location may (i) damage the Building or roof membrane, or (ii) limit or void the roof warranty. Prior to commencing installation, Tenant shall provide Landlord with (1) detailed plans and (b) are sufficiently detailed to allow specifications for the installation of the Rooftop Equipment Equipment, (2) copies of all required permits, licenses and authorizations, which Tenant will obtain at its own expense and which Tenant will maintain at all times during the operation of the Rooftop Equipment, and (3) a Certificate of Insurance evidencing insurance coverage as required by this Lease and any other insurance reasonably required by Landlord for the installation and operation of the Rooftop Equipment. (b) Tenant warrants and represents that (i) Tenant shall repair in a good and workmanlike manner and in accordance with all Laws any damage to the roof of the Building caused by the installation of the Rooftop Equipment, (ii) the "Legal Requirements"). If Landlord approves maintenance of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment on the roof or the operation thereof shall not cause interference with any telecommunications, mechanical or other systems either located at or servicing the Building (whether belonging to or utilized by Landlord or any other tenant or occupant of the Building) or located at or servicing any building, premises or location in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies vicinity of all the Building limited however to that permissible under applicable F.C.C. regulations to the extent that such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install regulations apply, (iii) the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the installation, existence, maintenance and operation of the Rooftop Equipment while it is on the Building shall not constitute a violation of any applicable laws, ordinances, rules, orders, regulations, etc. of any federal, state, county and operate and maintain municipal authorities having jurisdiction thereover. (c) The installation of the Rooftop Equipment shall be made subject to and in such accordance with all of the provisions of this Lease. The contractors performing the installation of the Rooftop Equipment and/or performing any work on or to the roof or risers of the Building shall be reasonably approved by Landlord prior to the commencement of any work, which approval shall not be unreasonably withheld, conditioned, or delayed. (d) Tenant covenants and agrees that the installation, operation and removal of the Rooftop Equipment (if required to be removed by Tenant under Paragraph 9 of the Lease) will be at its sole risk. Without limiting the generality of any indemnities set forth in the Lease, Tenant agrees to indemnify and defend Landlord against all claims, actions, damages, liabilities and expenses including reasonable attorney’s fees and disbursements in connection with the loss of life, personal injury, damage to property or business or any other loss or injury or as a manner so as not result of any litigation arising out of the installation, operation or removal of the Rooftop Equipment (if required to unreasonably interfere be removed by Tenant under Paragraph 9 of the Lease), except to the extent due to Landlord’s negligence or willful misconduct. (e) Landlord, in its commercially reasonable discretion, may require Tenant, at any time prior to the Expiration Date, to terminate the operation of the Rooftop Equipment if it is causing physical damage to the structural exterior of the Building, interfering with any other satellite, antennae, or service provided to other transmission facility on the Building's roof or tenants in the Building, or violates FCC regulations or applicable law. Landlord Notwithstanding the foregoing, if Tenant can correct the damage or disturbance caused by the Rooftop Equipment to Landlord’s reasonable satisfaction, Tenant may restore its operation. If the Rooftop Equipment is not corrected and restored to operation within thirty (30) days, Landlord, at its sole option, may require that Tenant screen remove the Rooftop Equipment with a parapet at its own expense. (f) At the expiration or other screening device acceptable to Landlord. sooner termination of this Lease (except as otherwise set forth in Paragraph 9 of this Lease), or upon termination of the operation of the Rooftop Equipment, or revocation of any license issued, Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including and all associated wiring related thereto)and other appurtenances) from the Building and repair any damage caused thereby, within five days after at Tenant’s sole cost and expense. Tenant shall leave the occurrence of any Installation Area in good order and repair. If Tenant does not remove the Rooftop Equipment when so required, Tenant hereby authorizes Landlord to remove and dispose of the following events: (1) the termination of Tenant's right Rooftop Equipment and to possess the Premises;charge Tenant for all reasonable costs and expenses incurred.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its risk and expensesole cost, install a satellite dish and related communications ----------------- telecommunications equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at a location approved by LandlordBuilding, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit subject to Landlord for its approval (which approval shall be in Landlord's sole discretion) prior written approval, not to be unreasonably withheld, conditioned or delayed, of plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of for the Rooftop Equipment and (b) are sufficiently detailed to allow the type and placement of all cabling and wiring ancillary thereto. Tenant shall be responsible for the installation paying all reasonable out-of-pocket, third party costs associated with Landlord's review of such plans and specifications for the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements")if any) . If Landlord approves of such plans, shall not charge Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required additional rent for the installation and operation thereof; copies use of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install space on the roof for the Rooftop Equipment. Tenant shall thereafter maintain be responsible for obtaining and maintaining all approvals, permits necessary and licenses required by Fairfax County, Reston or any federal, state or local government for the maintenance installation and operation of the Rooftop Equipment while it is on the Building and operate and maintain shall pay all fees attendant thereto. If the Rooftop Equipment in such a manner so as not is installed, Tenant shall have sole responsibility for the maintenance, repair and replacement thereof and of all cabling and wiring ancillary thereto and Tenant will be responsible for bearing the costs to unreasonably interfere with repair any other satellite, antennae, or other transmission facility on damage caused to the Building's roof or in Building by the Building. Landlord may require that Tenant screen installation of the Rooftop Equipment with a parapet Equipment. At the expiration or other screening device acceptable to Landlord. earlier termination of this Lease, Tenant shall maintain remove the Rooftop Equipment and screening device all cabling and wiring ancillary thereto and shall be responsible to repair any damage caused to the roof or Building in good repair connection with such removal. Notwithstanding the foregoing, Tenant covenants and condition. agrees that: (a) The Rooftop Equipment shall not unreasonably interfere with the standard use of the building by other tenants; (b) Tenant shall, at its risk and expense, remove shall pay any increase in Landlord's insurance rates occasioned by the installation or operation of the Rooftop Equipment; (c) Tenant shall fully insure against damage occasioned by the installation and/or operation of the Rooftop Equipment (including all wiring related thereto), within five days after subject to the occurrence provisions of any Sections 12.1 and 18.2 of the following events: Lease); (1d) Landlord shall retain the termination of Tenant's right to possess designate the Premises;placement of the Rooftop Equipment and to require such reasonable "screening" type improvements to the building as may be required to maintain its cosmetic appearance; and (e) If Tenant accesses the roof without a designated representative of Landlord, the burden of proof for any damages subsequent to such access shall be upon Tenant.

Rooftop Equipment. Provided 4.31.1 Notwithstanding anything to the contrary contained in the Rules and Regulations and subject to compliance with all applicable Governmental Requirements and the terms and conditions of this Lease, and provided that such installation and roof use shall not void any roof or other warranty applicable to the Building, Tenant complies shall have the non-exclusive right to install and maintain on the roof of the Building, at Tenant’s sole cost and expense, Telecommunication Facilities consisting of one (1) satellite dish with a diameter or maximum width of no more than thirty-six (36) inches (all of the foregoing collectively, the “Rooftop Equipment”) and associated wiring and cabling (“Tenant’s Roof Rights”) on the condition that such Rooftop Equipment is specifically and exclusively for the use of the Original Tenant or a Permitted Transferee in the ordinary course of its business. At Tenant’s expense and subject to availability, Landlord shall make available Tenant’s Pro Rata Share of any conduit space in the vertical risers of the Building which the Landlord from time to time makes available to tenants of the Building for purposes of running wiring and cabling in order to connect Tenant’s Rooftop Equipment to the Premises. Landlord has not made any representations or promises pertaining to the suitability of the Building’s rooftop for Tenant’s use. Tenant, for the purpose of this paragraph and its right to rooftop access hereunder, accepts the rooftop in its “AS IS” condition. 4.31.2 Prior to installation, Tenant will obtain any and all necessary licenses, approvals, permits, etc., necessary for the installation, maintenance and use of the Rooftop Equipment. No method of installation, maintenance or removal of the Rooftop Equipment shall be permitted which Landlord reasonably anticipates shall cause any warranty held by Landlord in respect of the roof of the Building to be deemed void or otherwise adversely affected thereby, nor adversely affect the Building structure or operating systems. 4.31.3 The installation of such Rooftop Equipment and associated wiring and cabling shall be considered a Tenant Alteration for all purposes of this Lease, and without limiting the generality of the foregoing, such installation shall be subject to the terms and conditions of Paragraphs 4.4 and 4.5 (Tenant Alterations and Tenant Work Performance, respectively). Prior to the installation of such Rooftop Equipment and associated wiring and cabling, Tenant shall provide Landlord with written plans and specifications showing the size of the Rooftop Equipment, its location on the roof (including plan elevations to indicate sightliness of location), operating parameters and radio frequencies (as applicable), and means of installation (including whether any penetrations of the roof shall be required for installation), all of which shall be subject to the approval of Landlord and its consultant for such matters (currently Riser Management), which approval shall not be unreasonably withheld. Tenant shall reimburse Landlord, within ten (10) Business Days after receipt of an invoice, for all reasonable out-of-pocket costs and expenses incurred by Landlord related to its review of Tenant’s plans and specifications, including the fees and expenses of Landlord’s consultant (regardless of whether Landlord approves Tenant’s plans and specifications) and Tenant’s installation. The installation of the Rooftop Equipment shall be performed at Tenant’s expense by Landlord or by Tenant at Landlord’s election and by contractors previously approved by Landlord. In no event shall the Landlord’s approval of Tenant’s plans and specifications be deemed a representation that Tenant’s Rooftop Equipment or plans and specifications comply with Governmental Requirements and/or the terms of ----------------- this SectionLease. Without limiting the foregoing, Landlord’s approval of Tenant’s plans and specifications shall not be deemed a representation that use of Tenant’s Rooftop Equipment will not cause interference with other systems in the Building. Landlord reserves the right to require Tenant may, at to relocate its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") Equipment to another location on the roof of the Building at a location upon fifteen (15) days advance written notice. 4.31.4 Tenant, through its designated and approved by Landlordemployees and contractors, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans solely responsible for the maintenance and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency care of the Rooftop Equipment and associated wiring and cabling and shall maintain the same in a clean, sanitary and safe condition and in good repair and free of any defects at all times during this Lease. Tenant, at its sole expense and risk, shall physically inspect (b) are sufficiently detailed to allow or arrange for the installation of inspection of) the Rooftop Equipment in at intervals of no more than six (6) months and these inspections shall include a good survey of structural integrity and workmanlike manner a review and in accordance with all Laws (the "Legal Requirements"). If Landlord approves correction of such plansany loose bolts, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipmentfittings or other appurtenances. Tenant shall thereafter maintain all permits necessary for provide Tenant’s written certification of such inspections to Landlord not more than ten (10) days following each such inspection. In the maintenance and operation absence of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as certification, Landlord shall have the right (but not the obligation) after providing Tenant five (5) days notice and opportunity to unreasonably interfere with any other satellitecure, antennae, to conduct or other transmission facility on the Building's roof or in the Building. Landlord may require arrange for such an inspection and corrective action and to charge Tenant for such costs. 4.31.5 Tenant covenants upon installation that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair the signals sent and condition. Tenant shall, at its risk and expense, remove the received by any of such Rooftop Equipment will not interfere with signals of other tenants’ communications equipment located on the roof of (including all wiring related thereto), within five days after or in) the occurrence of any Building or in the office park in which the Building is located or with other equipment associated with the operation of the following eventsBuilding or any other building located in such office park. Upon receipt of notice from Landlord, Tenant shall eliminate any such interference. 4.31.6 Tenant’s Roof Rights shall be exercised in such manner as: (1) will not create any hazardous condition or interfere with or impair the termination operation of the heating, ventilation, air conditioning, plumbing, electrical, fire protection, life safety, public utilities or other systems or facilities of the Building, (2) will not directly or indirectly interfere with, delay, restrict or impose any expense, work or obligation upon Landlord in the use or operation of the Building, and (3) shall not in any way conflict with any Governmental Requirement now in force or which may hereafter be enacted. The Tenant will, at its sole cost and expense, promptly comply or ensure that the roof installations comply with all Governmental Requirements or requirements of any board of fire insurance underwriters or other similar bodies now or hereafter constituted relating to or affecting Tenant’s roof use. If the rate of any insurance carried by Landlord is increased as a result of Tenant's right ’s roof use, then Tenant from time to possess the Premises;time will pay to Landlord within fifteen (15) days after demand by Landlord a sum equal to such increased cost.

Rooftop Equipment. Provided that 32.1 Tenant complies with shall have the terms of ----------------- this Section, Tenant maynon-exclusive right, at its risk sole cost and expense, install expense but without a satellite dish and related communications equipment and wiring (collectively, fee to Tenant for the "Rooftop ------- Equipment") on use of a portion of the roof of the Building at a location approved by Landlord (in Landlord’s reasonable discretion), --------- which to install satellite dishes, communications and other equipment may be used solely as needed for Tenant’s operations (collectively, the “Rooftop Equipment”) upon the roof of the Building for use by Tenant Tenant, provided, however, the size, location, design, manner and its Permitted Transferees or Permitted Sublessees. Before installing route of connection of each user to the Rooftop Equipment, and manner of attachment of the Rooftop Equipment to the Building, shall be conditioned upon and subject to following: (i) Tenant shall submit at all times adhere to Landlord for its approval all reasonable rules and regulations promulgated by Landlord; (which approval shall be in Landlord's sole discretionii) plans and specifications which (a) specify in detail the designproposed Rooftop Equipment, location, size, and, in the case manner of a satellite dish, frequency installation of the Rooftop Equipment and any subsequent alterations, additions or improvements to the Rooftop Equipment or the roof shall be subject to Landlord’s prior written consent, which consent shall not be unreasonably withheld, conditioned or delayed, provided that Landlord may withhold its consent in its sole discretion if such additions, alterations or improvements will materially and adversely affect the roof or structural portions of the Building or violate any of the requirements of this Lease; (biii) are sufficiently detailed intentionally omitted; (iv) prior to allow installation, Tenant shall obtain and provide Landlord a copy of any and all approvals, licenses or permits required by the City of Los Angeles and any other governmental or quasi-governmental authority for the construction and use of the Rooftop Equipment; (v) the Rooftop Equipment (including, without limitation, the installation and any alterations, additions, improvements or repairs thereto), at all times, shall comply with all applicable governmental codes, statutes and regulations, including those of the City of Los Angeles and the County of Los Angeles; (vi) Tenant shall not sell, license, lease or otherwise permit the use of or the transmissions from the Rooftop Equipment to or by other tenants or occupants of the Building except in connection with a Transfer permitted by this Lease; (vii) Tenant shall bear all reasonable costs, expenses and liability, including liability for roof leaks, which may arise by solely reason of the installation, operation or maintenance of any such Rooftop Equipment, and, to the extent permitted by Applicable Laws, and subject to Section 10.5.2, Tenant shall indemnify, defend and hold Landlord harmless from and against any claims, liabilities, demands, costs or expenses (including reasonable attorneys’ fees) to the extent incurred by Landlord as a result of Tenant’s installation or operation of the Rooftop Equipment; (viii) Tenant shall be solely responsible for the maintenance and repair of the Rooftop Equipment; and (ix) the Rooftop Equipment shall not interfere with the transmissions of other tenants or occupants within the Building. Tenant shall use, at Tenant’s expense, Landlord’s designated roofing contractor for any work in connection with installation of the Rooftop Equipment in which affects or pertains to the roof, including roof penetration and installation of structural supports, curbing and flashing on or to the roof, provided that such designated roofing contractor charges commercially reasonable rates. Landlord shall have no obligation to reserve any specific portion of the roof for Tenant’s use, provided that Landlord shall make a good and workmanlike manner and in accordance with all Laws (portion of the "Legal Requirements"). If Landlord approves roof of such plansthe Building, Tenant ------------------ shall install (in a good and workmanlike manner)as reasonably determined by Landlord, maintain and available for Tenant’s non-exclusive use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Equipment for use by Tenant shall thereafter maintain all permits necessary for the maintenance and operation of as provided herein. 32.2 The rights to the Rooftop Equipment while it is on provided herein are personal to the Tenant originally named herein and any other occupants of the Building and operate and maintain (so long as the Rooftop Equipment same are not occupying the Building in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related theretoviolation of this Lease), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;.

Rooftop Equipment. Provided that Tenant complies with In accordance with, and subject to, the terms and conditions set forth in Article IX of ----------------- the Office Lease and this SectionSection 18, Tenant may, at its risk shall have the right to use a reasonable amount and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") configuration of space on the roof of the Building (“Telecommunications Space”) in order to install and maintain, at a location approved by LandlordTenant’s sole cost and expense, --------- which one (1) or more satellite dishes and/or antennae on the roof of the Building (and reasonable equipment may be used solely and cabling related thereto), for receiving of broadcasts (as opposed to the generation or transmission of any such broadcasts) and receiving and generation of signals in connection with the business conducted by Tenant and its Permitted Transferees from within the Premises (all such equipment is defined collectively as the “Telecommunications Equipment”). Landlord makes no representations or Permitted Sublessees. Before installing warranties whatsoever with respect to the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency condition of the Rooftop Equipment and (b) are sufficiently detailed to allow roof of the Building, or the fitness or suitability of the roof of the Building for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plansinstallation, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Telecommunications Equipment, including, without limitation, with respect to the quality and clarity of any receptions and transmissions to or from the Telecommunications Equipment while it is on and the presence of any interference with such signals whether emanating from the Building or otherwise. The location, amount and operate configuration of the Telecommunications Space and maintain the Rooftop physical appearance, the size, and the weight of the Telecommunications Equipment in shall be subject to Landlord’s reasonable approval, the location of any such a manner so as not installation of the Telecommunications Equipment shall be designated by Landlord subject to unreasonably interfere with any other satelliteTenant’s reasonable approval, antennae, or other transmission facility on the Building's roof or in the Building. and Landlord may require that Tenant to install screening around such Telecommunications Equipment, at Tenant’s sole cost and expense, as reasonably required by applicable laws or as reasonably required by Landlord to screen the Rooftop such Telecommunications Equipment with a parapet or other screening device acceptable to Landlordfrom view. Tenant shall maintain such Telecommunications Equipment, as applicable, at Tenant’s sole cost and expense. In the Rooftop Equipment and screening device in good repair and conditionevent Tenant elects to exercise its right to install the Telecommunications Equipment, then Tenant shall give Landlord prior notice thereof. Tenant shall, at its risk and expense, shall reimburse to Landlord the actual out of pocket costs reasonably incurred by Landlord in approving such Telecommunications Equipment. Tenant shall remove such Telecommunications Equipment upon the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any expiration or earlier termination of the following events: (1) Lease as amended, or, in the event Tenant no longer occupies the Premises, then upon the termination of Tenant's ’s rights under this Section 18, and shall return the affected portion of the rooftop and the Building to the condition the rooftop and the Building would have been in had no such Telecommunications Equipment been installed (reasonable wear and tear and casualty excepted). Such Telecommunications Equipment shall be installed pursuant to plans and specifications approved by Landlord (specifically including, without limitation, all mounting and waterproofing details), which approval will not be unreasonably withheld, conditioned, or delayed. Notwithstanding any such review or approval by Landlord, Tenant shall remain solely liable for any damage to any portion of the roof or roof membrane, specifically including any penetrations, in connection with Tenant’s installation, use, maintenance and/or repair of such Telecommunications Equipment, and Landlord shall have no liability therewith. Tenant shall obtain any and all necessary government approval to install the Telecommunications Equipment, and such Telecommunications Equipment shall, in all instances, comply with applicable laws. Tenant shall not be entitled to license its Telecommunications Equipment to any unrelated third party, nor shall Tenant be permitted to receive any revenues, fees or any other consideration for the use of such Telecommunications Equipment by an unrelated third party. Tenant’s right to possess install such Telecommunication Equipment shall be non-exclusive, and Tenant hereby expressly acknowledges Landlord’s continued right (i) to itself utilize any rooftop space, and (ii) to re-sell, license or lease any rooftop space to an unaffiliated third party; provided, however, such Landlord (or third-party) use shall not materially interfere with (or preclude the Premises;installation of) Tenant’s Telecommunications Equipment.

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant maynon-exclusive right to install, at its risk Tenant's sole cost and expense, install a one (1) one antenna or satellite dish upon the roof of the Building and related communications equipment use existing fiber optic and wiring television cables presently located in the Building without any representation or warranty by Landlord as to the condition of the same (collectively, the "Rooftop ------- Equipment") on under the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant following conditions: (i) all plans and its Permitted Transferees or Permitted Sublessees. Before installing specifications for the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the designincluding but not limited to, weight, configuration, location, sizemeans of installation, and, in the case of a satellite dish, frequency cabling and screening of the Rooftop Equipment and are subject to the prior approval of Landlord, which shall not be unreasonably withheld, conditioned or delayed; (bii) are sufficiently detailed Tenant shall provide evidence to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with Landlord that Tenant has obtained all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents governmental approvals and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. ; (iii) Tenant shall thereafter maintain all permits necessary provide evidence to Landlord of insurance coverage for the maintenance installation, location, repair, removal, and operation of the Rooftop Equipment while it is on Equipment, with Landlord as an additional insured, all in form and substance reasonably approved by Landlord and such insurance shall be maintained during the Building Term of this Lease; (iv) Tenant shall indemnify, defend, and operate hold Landlord harmless from and maintain against any and all loss, liability, cost and expense incurred by Landlord as a result of the installation, location, repair, removal, or operation of the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. ; (v) Tenant shall maintain be responsible for the installation, engineering, maintenance, repair and removal of the Rooftop Equipment and screening device appurtenant equipment in good repair accordance with all federal, state and condition. local laws, and ordinances; (vi) no roof penetrations shall be made without obtaining Landlord's prior written consent (which may be withheld in Landlord's sole discretion); (vii) Tenant shall be responsible for any impairment of Landlord's roof warranty as a result of installation of the Rooftop Equipment; (viii) Tenant shall, at its risk and own expense, promptly repair any damage or wear to the roof resulting from the installation and use of the Rooftop Equipment and appurtenant equipment; (ix) the operation of the Rooftop Equipment shall be for Tenant's internal use only; and (x) the Rooftop Equipment shall not interfere with the use of any other equipment located on the roof of the Building. Landlord shall grant Tenant reasonable access to the roof for such installation, maintenance, repair, and removal of the Rooftop Equipment. Upon the expiration of this Lease, Tenant shall promptly remove the Rooftop Equipment (including and appurtenant equipment and repair any damage caused by such removal. Tenant shall be responsible for any and all wiring related thereto), within five days after costs relating to the occurrence of any of the following events: (1) the termination of Rooftop Equipment and Tenant's right to possess the Premises;exercise of its rights under this Section 29.40, including, without limitation, installation, maintenance, repair and removal costs.

Rooftop Equipment. Provided that (i) As long as this Lease is in full force (a) Tenant complies with shall have the terms of ----------------- this Section, Tenant mayright, at its risk Tenant’s sole cost and expense, install a satellite to install, use, operate, maintain, repair and remove telecommunications, antennae, microwave dish and/or other similar telecommunications equipment (“Telecommunications Equipment”) and related communications (b) Tenant shall have the right, at Tenant’s sole cost and expense, subject to obtaining Landlord’s reasonable approval, to install, use, operate, maintain, repair and remove HVAC and other rooftop equipment and wiring which is customary for the Permitted Use hereunder including by businesses similar to Tenant (together with the Telecommunications Equipment, collectively, the "“Rooftop ------- Equipment") ”), on an area on the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing (the “Rooftop Equipment, Tenant shall submit Equipment Area”) mutually acceptable to Landlord for its approval (which approval shall be and Tenant. Landlord agrees to only install and maintain on the rooftop of the Building such items as are necessary to operate the Building and Project in Landlord's sole discretion) plans accordance with Institutional Owner Practices. The use, installation, operation, maintenance, repair and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency removal of the Rooftop Equipment and the Rooftop Equipment Area shall be subject to all of the terms and conditions of this Lease (as if the Rooftop Equipment Area were a part of the Premises), and upon the expiration or earlier termination of the Term of this Lease, the Rooftop Equipment shall be treated as Tenant’s personal property under the provisions of Section 10.5. (ii) Tenant’s rights under this Section 8.3.5 are personal to Original Tenant and any Transferees consented to by Landlord, and notwithstanding the provisions of Article 15 of this Lease, Tenant’s rights under this Section 8.3.5 are (a) except as expressly provided otherwise in this Section 8.3.5(ii), not transferable by assignment, subletting or otherwise and (b) are sufficiently detailed intended solely for (and may be used solely for) servicing the business conducted from the Premises. Tenant acknowledges that Landlord expressly reserves the right: (A) to allow use all portions of the roof of the Building outside of the Rooftop Equipment Area (defined above) for any purpose whatsoever, but which use will not materially interfere with Tenant’s Rooftop Equipment, and (B) to install (or to require Tenant to install) screening around the Rooftop Equipment (at Tenant’s sole cost and expense) to be constructed with materials and in a configuration, size and height approved by Landlord. Tenant hereby assumes any and all costs, expenses, liabilities and risks associated with the Rooftop Equipment. Tenant agrees that Landlord is under no obligation to perform any work or provide any materials to repair any portion of the Building or roof for construction and installation of the Rooftop Equipment, and that, in no event, shall Landlord have any obligation in the event of a fire or other casualty to repair or restore the Rooftop Equipment. Tenant agrees to pay for all utility hook-up charges necessary for the installation of the Rooftop Equipment in a good Equipment, and workmanlike manner Tenant shall pay for all electrical power consumed or used by or delivered to the Rooftop Equipment. Landlord shall have no liability (whether to Tenant or to any third party) for any interruption of service and in accordance with all Laws associated costs resulting from any such interruption of service shall be the sole responsibility of Tenant. (the "Legal Requirements"). If Landlord approves of such plans, iii) Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use cause the Rooftop Equipment in accordance with all Legal Requirements to comply with, and shall obtain comply with, all consents Laws applicable to the installation, use, operation, maintenance, repair and removal of the Rooftop Equipment. Tenant agrees to obtain, at its sole cost and expense, all governmental approvals and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted the Rooftop Equipment, to submit same to Landlord before prior to the installation of any Rooftop Equipment, and to maintain the same in effect throughout the Term of this Lease. Tenant begins acknowledges that Landlord has made no representations or warranties to install Tenant concerning the appropriateness of the Rooftop Equipment Area or Rooftop Equipment under applicable Laws, or any other representations or warranties whatsoever with respect to the Rooftop Equipment Area or Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and not operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with cause (A) interference to any other satellite, antennae, tenant or other transmission facility licensee who has previously acquired a right to install communications facilities on the roof of the Project (but not the Building's roof ) or (B) interference with Landlord’s business operations equipment including telephones, radios, televisions and other electrical equipment in the Building. Building and Project Upon receipt of notice from Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. of any breach of its obligations under this Section 8.3.5(iii), Tenant shall take all commercially reasonable steps necessary to correct and eliminate interference. (iv) Tenant agrees, at its sole cost and expense, to maintain the Rooftop Equipment and screening device the Rooftop Equipment Area in a safe, clean, neat and sightly condition and in good order and repair and conditionat all times during the Term of this Lease. Tenant shallagrees to reimburse Landlord for any expenses incurred by Landlord for any damage to the roof or any equipment located thereon or any improvements, fixtures and furnishings therein which results from any work by Tenant or any Tenant Party. Additionally, Tenant agrees upon removal of the Rooftop Equipment to, at its risk Tenant’s sole cost and expense, remove repair and restore the Rooftop Equipment (including all wiring related thereto)Equipment. Area to its original condition as existed prior to the installation of the Rooftop Equipment, within five days after subject to ordinary wear and tear. The Rentable Area of the occurrence of Premises set forth in this Lease and used to calculate Base Rent does not and shall not include any of the following events: (1) the termination of Tenant's right roof space to possess the Premises;which Tenant is given access rights under this Lease.

Rooftop Equipment. Provided that Tenant complies with Subject to the terms of ----------------- this Sectionfollowing provisions hereof, Tenant mayshall have the exclusive right to install, at on Tenant’s Proportionate Share (as such term is hereinafter defined) of the portion of the roof of the Building on which installations can be made, an emergency generator (independent of the generators included in Base Building Work) (“Tenant’s Generator”) and equipment for telecommunications, data transmission and other similar technologies, in each case to be utilized by Tenant, for the purpose of Tenant’s conduct of the Permitted Uses within the Premises and/or within other premises leased by Tenant in the Xxxxxxx Square, Cambridge area, and by its risk permitted subtenants and expense, install a satellite dish assignees hereunder only (“Tenant’s Communications Equipment”). “Tenant’s Proportionate Share” shall mean the ratio of the Total Rentable Floor Area of the Premises to the Total Rentable Floor Area of the Building. Landlord and related communications Xxxxxx acknowledge and agree that certain equipment and wiring (collectivelyfixtures, the "Rooftop ------- Equipment") which may include Tenant’s Generator, will be installed on the roof of the Building at a location approved by as part of Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees ’s Work (as such term is hereinafter defined). In connection with the installation of Tenant’s Generator (if the same is not part of Landlord’s Work) or Permitted Sublessees. Before installing the Rooftop Equipmentany Tenant’s Communications Equipment as contemplated in this Section 2.3(C), Tenant shall submit to Landlord plans and specifications (including, but not limited to, design and size) for Tenant’s Generator (if the same is not part of Landlord’s Work) or such Tenant’s Communications Equipment and the proposed location thereof on the roof of the Building (including but not limited to the size and aesthetics of such Tenant’s Generator (if the same is not part of Landlord’s Work) or Tenant’s Communications Equipment and the architectural compatibility and relationship between Xxxxxx’s Generator (if the same is not part of Landlord’s Work) or such Tenant’s Communications Equipment and the general area of the Lot). Landlord shall respond within ten (10) business days after its receipt of such plans and specifications either indicating its approval (which approval shall not be unreasonably withheld, delayed or conditioned) or stating with reasonable specificity its reasons for disapproval. If Landlord fails to respond within such ten (10) business day period, Tenant may re-send such request to Landlord via registered or certified mail, return receipt requested, or recognized overnight delivery service, with the following statement in Landlord's sole discretionbold at the beginning of such request, “WARNING: POSSIBLE DEEMED APPROVAL NOTICE. Failure to respond to this request within ten (10) days may lead to deemed approval of such request”. Should Landlord fail to respond to such second request within ten (10) days after receipt thereof, such failure shall be deemed to be approval of such plans and specifications by Landlord. In addition to the foregoing, it is understood and agreed that the exercise of rights by Tenant under this Section 2.3(C) shall be subject to Tenant obtaining and keeping in full force and effect, at Tenant’s sole cost and expense, all permits, approvals, licenses and other determinations as shall be necessary or required under all applicable laws, ordinances, rules, regulations, statutes, by-laws, court decisions, and orders, policies and requirements of all public authorities (“Legal Requirements”) with respect the use and operation of Tenant’s Generator (if the same is not part of Landlord’s Work) or Tenant’s Communications Equipment (Landlord hereby agreeing to cooperate with Tenant in obtaining any such approval, provided that Landlord shall not be put to any third party cost or expense in connection therewith). It is further understood and agreed that rights set forth in this Section 2.3(C) with respect to Tenant’s Communication Equipment but not with respect to Tenant’s Generator, whether installed as part of Landlord’s Work or by Xxxxxx, shall only be exercisable by Tenant on the conditions (which conditions may be waived by Landlord at any time upon written notice to Tenant) that: (ai) specify in detail there is no Event of Default at the design, location, size, and, in the case time of a satellite dish, frequency Xxxxxx’s request for approval of said plans and specifications hereunder; (ii) Tenant directly leases seventy-five percent (75%) or more of the Rooftop Equipment Office Portion of the Building (inclusive of any permitted subleases under Article XII below); and (biii) are sufficiently detailed to allow for the installation of the Rooftop Equipment this Lease is still in a good full force and workmanlike manner and in accordance with all Laws (the "Legal Requirements")effect. If Landlord approves shall install Tenant’s Generator as part of Landlord’s Work or Tenant shall install Tenant’s Generator or if Tenant shall install such plansTenant’s Communications Equipment, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary responsible for the maintenance and operation repair thereof, at Tenant’s sole cost and Tenant’s Generator and such Tenant’s Communications Equipment shall be at the sole risk of Tenant, except to the Rooftop Equipment while it extent of Xxxxxxxx’s negligence, Landlord having no obligation with respect to any insurance relating thereto. In performing the work necessary to install (if Tenant is on the Building and operate and installing Tenant’s Generator) or maintain the Rooftop Equipment Tenant’s Generator or to install or maintain Tenant’s Communications Equipment, Tenant shall engage a contractor approved by Landlord, which approval shall not be unreasonably withheld, delayed or conditioned; provided that, in Landlord’s reasonable judgment, such a manner so as contractor will be able to preserve Landlord’s roof warranty. Landlord shall respond within ten (10) business days after its receipt of written request for Landlord’s approval of such contractor (which approval shall not be unreasonably withheld, delayed or conditioned) or stating with reasonable specificity its reasons for disapproval. If Landlord fails to unreasonably interfere with any other satelliterespond within such ten (10) business day period, antennaeTenant may re-send such request to Landlord via registered or certified mail, return receipt requested, or other transmission facility on recognized overnight delivery service, with the Building's roof or following statement in bold at the Buildingbeginning of such request, “WARNING: POSSIBLE DEEMED APPROVAL NOTICE. Failure to respond to this request within ten (10) days may lead to deemed approval of such request”. Should Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable fail to respond to such second request within ten (10) days after receipt thereof, such failure shall be deemed to be approval of such contractor by Landlord. Tenant shall have no rights to license, sublease, assign or otherwise transfer its rights to install and use Tenant’s Communications Equipment (other than to permitted subtenants and assignees). Subject to the rights expressly granted in this subsection (D) in connection with Tenant’s Communications Equipment, including without limitation Tenant’s rights to use Tenant’s Proportionate Share of the roof of the Building, and the rights expressly granted in subsection (E) in connection with the Roof Deck (as hereinafter defined), Landlord hereby reserves the right (at its sole discretion but without impairing the roof rights of Tenant as set forth herein) to install and to permit others to install, use and maintain antennas and similar installations on the Rooftop rooftop of the Building, provided that any agreement with a third party granting the right to install telecommunications equipment shall contain language prohibiting interference with Tenant’s Communications Equipment and screening device shall provide Landlord with a termination right if such interference is not remedied after a reasonable period of time. If measurable interference shall occur, Tenant shall provide notice thereof to Landlord and Landlord shall use reasonable efforts to cause the same to be remedied; however, if despite such efforts the same are not remedied within a period reasonably necessary to cure such interference, Landlord shall exercise the termination right set forth in good repair and conditionits agreement with such interfering party. Tenant shallTenant, at its risk and Tenant’s expense, remove shall repair any damage to the Rooftop Equipment Building and the Lot resulting from Tenant’s installation, operation, maintenance, repair, replacement or removal of Tenant’s Generator and Tenant’s Communications Equipment. Landlord, at Landlord’s expense and not as an Operating Expense under this Lease, shall repair any damage to the Building and the Lot resulting from Landlord’s or any such third party’s installation, operation, maintenance, repair, replacement or removal of antennas and similar installations as set forth in the immediately preceding paragraph (including all wiring related thereto), within five days after except to the occurrence of any extent such installations are utilized by Landlord solely in connection with the operation of the following events: (1) Building, in which event such costs may be included in Operating Expenses for the Building in accordance with Article VII hereof). Upon the expiration or earlier termination of the Lease Term, Tenant's right , at Tenant’s expense shall remove Tenant’s Generator and Tenant’s Communications Equipment and restore the portion of the roof and/or the Building on or in which Tenant’s Generator and Tenant’s Communications Equipment was located as nearly as practicable to possess its condition prior to the Premises;installation thereof (reasonable wear and tear and damage by Casualty and Taking (as those terms are defined in Article XIV) excepted).

Rooftop Equipment. Provided that Tenant complies with (a) During the Lease Term, and subject to the terms and conditions of ----------------- this SectionSection 7, Tenant mayshall have the non-exclusive right, at its risk and expenseno additional charge, install to use a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") on portion of the roof of the Building designated by Landlord for the installation, maintenance, repair, replacement and removal of up to one (1) satellite dish or antenna not exceeding one (1) meter in diameter and E–8 four feet (4’) in height, together with the necessary conduit extending from such dish or antenna to the Premises (collectively, the “Rooftop Equipment”); provided, however, (i) the installation and operation of the Rooftop Equipment must be only for providing services to the Premises for Tenant’s exclusive use, and be permitted under, and conform to, all applicable laws, (ii) Tenant shall cause the Rooftop Equipment to be fully screened from view and sound in a manner reasonably directed by Landlord; and (iii) Landlord shall have approved in its reasonable discretion all aesthetic, structural, mechanical and electrical details of the Rooftop Equipment, including without limitation, the proposed method of attaching the Rooftop Equipment to the roof. Tenant shall be entitled to connect the Rooftop Equipment to the Building’s electric power source using riser space available generally to tenants in the Building; provided, however, that: (A) the method of connecting any component of the Rooftop Equipment to the Building’s electric power source and the specific location in the Building at a location which such connection will be effected, shall be subject to Landlord’s prior written approval; and (B) such connection shall be undertaken by licensed contractor(s) approved by Landlord (such approval not to be unreasonably withheld, conditioned or delayed). The cost of connecting the Rooftop Equipment to the Building’s electric power source and the cost of all electricity consumed by the Rooftop Equipment shall be separately metered and paid by Tenant. Tenant shall pay the cost of any such meter or submeter. (b) Prior to or contemporaneous with requesting Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing ’s approval of the installation of the Rooftop Equipment, Tenant shall submit provide to Landlord for its approval Landlord: (which approval shall be in Landlord's sole discretioni) plans and specifications which for the Rooftop Equipment; and (aii) specify in detail copies of all required governmental and quasi-governmental permits, licensees, special zoning variances, and authorizations for the design, location, size, and, in the case of a satellite dish, frequency installation and operation of the Rooftop Equipment Equipment, all of which Tenant shall obtain at its own cost and (b) are sufficiently detailed to allow for expense. Landlord may withhold its approval of the installation of the Rooftop Equipment if the installation, operation or removal of the Rooftop Equipment may (A) interfere with and/or materially and adversely affect the structure of the Building or any of the base Building systems, and/or void any warranty or guaranty applicable to the Building or the roof; or (B) cause the violation of any applicable laws. Landlord may require as a precondition to its approval of the installation of the Rooftop Equipment that Tenant (or, at Landlord’s option, Landlord) install, at Tenant’s sole cost and expense, a walkway and/or additional structural support, in a good and workmanlike manner and reasonably determined by Landlord’s engineer in accordance with all Laws its sole discretion, to the portion of the Roof on which Tenant desires to install the Rooftop Equipment. (the "Legal Requirements"). If Landlord approves of such plans, c) Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance good condition and repair throughout the Lease Term. (d) Landlord shall have access to the portion of the roof on which the Rooftop Equipment is located in order to inspect the Rooftop Equipment and the roof to determine, inter alia, if the Rooftop Equipment is causing damage to the roof or any other part of the Building and/or to repair the roof or remove or relocate the Rooftop Equipment. Landlord, at its sole option and discretion, may require Tenant, at any time prior to the expiration of this Lease, to terminate the operation of the Rooftop Equipment if any such equipment (i) interferes with and/or adversely affects the base Building or any of the base Building systems, (ii) threatens to void any warranty or guaranty applicable to the Building or the roof; (iii) generates noise or vibration which disrupts other tenants of the Building, or is interfering with any rooftop equipment being operated on the roof or elsewhere in the Building by any tenant in the Building E–9 or other licensee authorized by Landlord; (iv) violates any applicable laws, or (v) is not maintained in good condition and repair. Without limiting the other terms and conditions of this Lease but in furtherance thereof, Tenant acknowledges and agrees that Landlord has the right to remove, alter, improve, renovate or rebuild the common areas of the Building at any time during the Lease Term. In connection with Landlord’s exercise of the foregoing right, Landlord shall have the right, upon fifteen (15) days prior notice to Tenant, to temporarily suspend Tenant’s use of the Rooftop Equipment and/or relocate the Rooftop Equipment. In connection with Landlord’s exercise of the foregoing rights, Landlord shall not be liable to Tenant for any expense, injury, loss or damage resulting from Landlord’s exercise of any of the foregoing rights, or for damages by reason of interference with the business of Tenant or inconvenience or annoyance to Tenant or the customers or clients of Tenant, all Legal Requirements such claims against Landlord for any and all such liability being hereby expressly released by Tenant. (e) Tenant acknowledges that the rights contained in this Section 7 are non-exclusive, and that Landlord may grant such rights to any other tenant in the Building or any other licensee of Landlord’s choice (whether or not such licensee is a tenant of the Building). (f) At the expiration or earlier termination of this Lease, Tenant, at Tenant’s sole cost, shall obtain remove the Rooftop Equipment and all consents cabling and permits required other equipment relating thereto from the Building, and Tenant shall restore the area where the Rooftop Equipment was located to its condition existing prior to such installation. In the event Tenant fails to promptly do so, Tenant hereby authorizes Landlord to remove the Rooftop Equipment and all cabling and other equipment relating thereto and restore the area of the roof and the other portions of the Building affected thereby, and charge Tenant for all actual costs and expenses incurred in connection therewith. Tenant’s obligation to perform and observe this covenant shall survive the expiration or earlier termination of this Lease. (g) In no event shall Landlord’s approval of the installation or operation of Rooftop Equipment constitute any representation or warranty by Landlord that such installation and operation thereof; copies is in compliance with applicable laws or any warranty or guaranty applicable to the roof of all such permits the Building. Landlord expressly makes no representations or warranties with respect to the suitability or fitness of the roof for the Rooftop Equipment or applicable laws associated with the installation or operation of the Rooftop Equipment. (h) Tenant covenants and evidence agrees that the installation, operation, maintenance and removal of such consents must the Rooftop Equipment shall be submitted at Tenant’s sole risk, cost and expense, and Landlord assumes no liability or responsibility whatsoever with respect to Landlord before Tenant begins to install the installation, operation and removal of the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for indemnify, defend and hold Landlord harmless from and against any cost, damage, claim, liability or expense (including attorneys’ fees) incurred by or claimed against Landlord, directly or indirectly, as a result of or in any way arising from the installation, operation, maintenance and operation or removal of the Rooftop Equipment while it is on the Building and operate and maintain Equipment, including without limitation, any loss or injury resulting from transmissions from the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;Equipment.

Rooftop Equipment. Provided that If Tenant complies with desires to use the terms roof of ----------------- this Sectionthe 26642 Building and/or the 26672 Building to install communication and/or supplemental HVAC equipment to be used from the Premises, Tenant maymay so notify Landlord in writing (“Rooftop Equipment Notice”), which Rooftop Equipment Notice shall generally describe the specifications for the equipment desired by Tenant. If at its risk and expensethe time of Landlord’s receipt of the Rooftop Equipment Notice, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") Landlord reasonably determines that space is available on the roof of the Building at a location applicable building for such equipment, then subject to all governmental laws, rules and regulations, Tenant and Tenant’s contractors (which shall first be reasonably approved by Landlord) shall have the right and access to install, --------- which repair, replace, remove, operate and maintain (i) supplemental HVAC equipment required for Tenant’s Supplemental Units (“Rooftop HVAC Equipment”) and/or (ii) one (1) so-called “satellite dish” or other similar device, such as antennae on either the 26642 Building or the 26672 Building, or both (collectively, “Communication Equipment”) no greater than one (1) meter in diameter, together with aesthetic screening designated by Landlord and all cable, wiring, conduits and related equipment, for the purpose of receiving and sending radio, television, computer, telephone or other communication signals, at locations on the roof of the applicable building designated by Landlord. The Rooftop HVAC Equipment and the Communication Equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing collectively referred to herein as the “Rooftop Equipment, ”. Landlord shall have the right to require Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of relocate the Rooftop Equipment and (b) are sufficiently detailed at any time to allow for another location on the installation roof of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (applicable building reasonably approved by Tenant, provided that the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ cost thereof shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipmentborne by Landlord. Tenant shall thereafter maintain all permits retain Landlord’s designated roofing contractor to make any necessary for penetrations and associated repairs to the maintenance roof in order to preserve Landlord’s roof warranty. Tenant’s installation and operation of the Rooftop Equipment while it is on shall be governed by the Building following terms and conditions: (A) Tenant’s right to install, replace, repair, remove, operate and maintain the Rooftop Equipment in shall be subject to all governmental laws, rules and regulations and covenants, conditions and restrictions and Landlord makes no representation that such a manner covenants, conditions and restrictions and laws, rules and regulations permit such installation and operation. (B) All plans and specifications for the Rooftop Equipment shall be subject to Landlord’s reasonable approval. (C) All costs of installation, operation and maintenance of the Rooftop Equipment and any necessary related equipment (including, without limitation, costs of obtaining any necessary permits and connections to the Project’s electrical system) shall be borne by Tenant. (D) It is expressly understood that Landlord retains the right to use the roof of the Project for any purpose whatsoever provided that Landlord shall not unreasonably interfere with Tenant’s use of the Rooftop Equipment. (E) Tenant shall use the Rooftop Equipment so as not to unreasonably interfere with cause any interference to the non-communication equipment operations of other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that tenants within their premises. (F) Tenant screen shall use the Rooftop Equipment so as not to cause any interference with a parapet any Communication Equipment which may exist prior to installation of Tenant’s Rooftop Equipment. (G) Landlord shall not have any obligations with respect to the Rooftop Equipment. Landlord makes no representation that the Communication Equipment will be able to receive or other screening device acceptable transmit communication signals without interference or disturbance (whether or not by reason of the existing installations or use of similar equipment by others on the roof of the Project) and Tenant agrees that Landlord shall not be liable to LandlordTenant therefor. Tenant shall maintain not lease or otherwise make the Communication Equipment available to any third party and the Communication Equipment shall be only for Tenant’s use in connection with the conduct of Tenant’s business in the Premises. (H) Tenant shall (i) be solely responsible for any damage caused as a result of the Rooftop Equipment, (ii) promptly pay any tax, license or permit fees charged pursuant to any laws or regulations in connection with the installation, maintenance or use of the Rooftop Equipment and screening device in good repair comply with all precautions and conditionsafeguards recommended by all governmental authorities, and (iii) pay for all necessary repairs, replacements to or maintenance of the Rooftop Equipment. (I) The Rooftop Equipment shall remain the sole property of Tenant. At Landlord’s election, Tenant shall, at its risk and expense, shall remove the Rooftop Equipment and related equipment at Tenant’s sole cost and expense upon the expiration or sooner termination of this Lease or upon the imposition of any governmental law or regulation which may require removal, and shall repair the Project upon such removal to the extent required by such work of removal. If Tenant fails to remove the Rooftop Equipment and repair the Project within fifteen (including all wiring related thereto), within five 15) days after the occurrence expiration or earlier termination of any this Lease, Landlord may do so at Tenant’s expense. The provisions of this Section 12(c)(1) shall survive the expiration or earlier termination of this Lease. (J) The Rooftop Equipment shall be deemed to constitute a portion of the following events: Premises for purposes of Articles 13 and 14 of this Lease. (1K) Upon request from Landlord, Tenant agrees to execute a license agreement with Landlord or Landlord’s rooftop management company regarding Tenant’s installation, use and operation of the termination Rooftop Equipment, which license agreement shall be in commercially reasonable form and shall incorporate the terms and conditions of Tenant's right to possess the Premises;this Section 12(c).

Rooftop Equipment. Provided that Landlord shall permit Tenant complies with the terms of ----------------- this Section, Tenant may, to install and maintain at its risk and expense, install a satellite dish and related Tenant’s sole expense communications equipment and wiring to be used solely for communications from or to Tenant (collectively, the "Rooftop ------- “Communications Equipment"”) on the roof of the Building at a location approved by in locations acceptable to Landlord and in strict compliance with all applicable governmental laws and regulations and Landlord, --------- which equipment ’s roof warranty. The Communications Equipment may not be leased or hired out to any third parties and shall not be used solely for commercial purposes unrelated to Tenant’s business conducted in the Premises. Landlord makes no warranties or representations to Tenant as to the permissibility of any Communications Equipment on the Building under applicable law. Tenant shall be required to obtain all governmental permits, consents or authorizations necessary for the erection and operation of the Communications Equipment, if any. Upon the expiration or earlier termination of this Lease, Tenant, at its sole cost and expense, shall remove the Communications Equipment including any related cabling or wiring and restore the Building to a condition comparable to its condition immediately prior to the installation of such equipment, [*CONFIDENTIAL TREATMENT HAS BEEN REQUESTED AS TO CERTAIN PORTIONS OF THIS DOCUMENT. EACH SUCH PORTION, WHICH HAS BEEN OMITTED HEREIN AND REPLACED WITH A SERIES OF THREE ASTERISKS IN BRACKETS [***], HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.] ordinary wear and tear, and damage by Tenant and casualty not caused by Tenant, its Permitted Transferees agents, employees, contractors or Permitted Sublesseesinvitees, excepted. Before installing If installation of the Rooftop EquipmentCommunications Equipment requires any roof penetrations, Tenant shall submit use a contractor reasonably approved by Landlord and shall cause such work to be done in a manner that will preserve any roof warranty held by Landlord. The nature, design and specifications of any rooftop Communications Equipment to be subject to Landlord’s reasonable approval which shall not be unreasonably withheld or delayed. Landlord, in Landlord’s sole discretion, may permit Tenant to install and maintain, at Tenant’s sole expense and in compliance with all applicable laws, additional HVAC equipment (“HVAC Equipment”) on the roof of the Building if Tenant establishes to Landlord’s satisfaction that the Building roof and structure are adequate to support the HVAC Equipment. Tenant shall provide full and complete plans for any rooftop HVAC Equipment to Landlord for its review and approval (which approval prior to installing such equipment. Landlord makes no warranties or representations to Tenant as to the permissibility of any HVAC Equipment on the Building under applicable law or as to the ability of the Building to support additional rooftop HVAC Equipment. Tenant shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed required to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all governmental permits, consents and permits required or authorizations necessary for the installation and operation of the HVAC Equipment and shall be solely responsible for any repair and maintenance thereof; copies of all such permits and evidence of such consents must be submitted to . Tenant shall use a contractor approved by Landlord before Tenant begins to install the Rooftop EquipmentHVAC Equipment and shall cause such work to be done in a manner that will not damage the roof or any other part of the Building and to preserve any roof warranty held by Landlord. Tenant’s installation and use of the Communications Equipment or HVAC Equipment may not in any way interfere with the systems of the Building or the quiet enjoyment of other tenants of the Building or any other tenant’s rooftop equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation acknowledges that other tenants of the Rooftop Equipment while it is Building have or will be installing antenna and related equipment in or on the Building and operate and maintain the Rooftop Equipment in Tenant agrees to cooperate with such a manner other tenants so as not to unreasonably interfere with avoid interference among users. If installation, maintenance, use, or removal of any equipment on the rooftop causes any damage to the roof or roof membrane or any other satellite, antennae, or other transmission facility on portion of the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. , then Tenant shall maintain be solely responsible for such damage and shall ensure that the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any remaining useful life of the following events: (1) roof is the termination same as it would have been but for the penetrations. Tenant’s insurance and indemnification obligations shall apply to any rooftop installations made by Tenant and any activities of Tenant's right to possess the Premises;Tenant in relation thereto.

Rooftop Equipment. Provided that a. Tenant complies with shall have the terms of ----------------- this Section, Tenant mayexclusive right, at its risk and expenseno additional cost, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") to utilize space on the roof of the Building at a for the purpose of installing (in accordance with the terms and conditions of Paragraph 9 of this Lease), operating and maintaining rooftop equipment to be used by Tenant in connection with Tenant's use of the Premises for the Permitted Use (collectively the “Rooftop Equipment”); provided, however, that the foregoing shall not limit Landlord's right to maintain equipment on the roof of the Building to extent necessary to operate the Building. The exact location approved of the space on the roof to be used by Tenant shall be reasonably mutually agreed upon by Landlord and Tenant (the “Roof Space”). The installation of the Rooftop Equipment shall be subject to compliance with all Legal Requirements and the the approval of Landlord, --------- which equipment may shall not be used solely by Tenant unreasonably withheld, conditioned or delayed, in consultation with Landlord's architect and/or engineer with respect to the plans and its Permitted Transferees or Permitted Sublessees. Before installing specifications of the Rooftop Equipment, the manner in which the Rooftop Equipment is attached to the roof of the Building and the manner in which any cables are run to and from the Rooftop Equipment. Any structural upgrades to the Building that may be necessary to accommodate the Rooftop Equipment shall be at Tenant's sole cost and expense. Tenant shall submit be solely responsible for obtaining all necessary governmental and regulatory approvals and for the cost of installing, operating, maintaining and removing the Rooftop Equipment. If at any time Landlord, in its reasonable discretion, deems it necessary or in order to comply with Legal Requirements, Tenant shall provide and install, at Tenant's sole cost and expense, appropriate aesthetic screening, reasonably satisfactory to Landlord, for the Rooftop Equipment (the “Aesthetic Screening”). b. Landlord agrees that Tenant shall have access to the roof of the Building and the Roof Space for its approval (the purpose of installing, maintaining, repairing and removing the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, all of which approval shall be in Landlordperformed by Tenant or Tenant's authorized representative or contractors at Tenant's sole discretioncost 1005628.07/SF 375170-00002/11-24-16/mrm/mrm -63- and risk. It is agreed, however, that only authorized engineers, employees or properly authorized contractors of Tenant, FCC (defined below) plans inspectors, or persons under their direct supervision will be permitted to have access to the Roof Space. Tenant further agrees to exercise control over the people requiring access to the Roof Space in order to keep to a minimum the number of people having access to the Roof Space and specifications which (a) specify in detail the designfrequency of their visits. It is further understood and agreed that the installation, locationmaintenance, size, and, in the case of a satellite dish, frequency operation and removal of the Rooftop Equipment Equipment, the appurtenances and (b) are sufficiently detailed the Aesthetic Screening, if any, is not permitted to allow damage the Building or the roof thereof. Tenant agrees to be responsible for any damage caused to the installation roof or any other part of the Building, which may be caused by Tenant or any of its agents or representatives. c. Tenant shall, at its sole cost and expense, and at its sole risk, install, operate and maintain the Rooftop Equipment in a good and workmanlike manner manner, and in accordance compliance with all Laws applicable Building, electric, communication, and safety codes, ordinances, standards, regulations and requirements, now in effect or hereafter promulgated, of the Federal Government, including, without limitation, the Federal Communications Commission (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner“FCC”), maintain the Federal Aviation Administration (“FAA”) or any successor agency of either the FCC or FAA having jurisdiction over radio or telecommunications, and use of the state, city and county in which the Building is located. Under this Lease, Landlord and its agents assume no responsibility for the licensing, operation and/or maintenance of Tenant's equipment. Tenant has the responsibility of carrying out the terms of its FCC license in all respects. The Rooftop Equipment shall be connected to the Building power supply in strict compliance with all applicable Building, electrical, fire and safety codes. Except to the extent caused by Landlord's negligence or willful misconduct, neither Landlord nor its agents shall be liable to Tenant for any stoppages or shortages of electrical power furnished to the Rooftop Equipment or the Roof Space because of any act, omission or requirement of the public utility serving the Building, or for any other cause beyond the reasonable control of Landlord, and Tenant shall not be entitled to any rental abatement for any such stoppage or shortage of electrical power. Neither Landlord nor its agents shall have any responsibility or liability for the conduct or safety of any of Tenant's representatives, repair, maintenance and engineering personnel while in accordance with all Legal Requirements or on any part of the Building or the Roof Space. d. The Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, shall remain the personal property of Tenant, and shall obtain all consents and permits required for be removed by Tenant at its own expense at the installation and operation thereof; copies expiration or earlier termination of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop EquipmentLease. Tenant shall thereafter maintain all permits necessary for repair any damage caused by such removal, including the maintenance patching of any holes to match, as closely as possible, the color surrounding the area where the equipment and operation of the Rooftop Equipment while it is on the Building and operate and appurtenances were attached. Tenant agrees to maintain the Rooftop Equipment in such a manner so proper operating condition and maintain same in satisfactory condition as not to unreasonably interfere with any other satelliteappearance and safety. Tenant agrees that at all times during the Lease term, antennaeit will keep the roof of the Building and the Roof Space free of all trash or waste materials produced by Tenant or Tenant's agents, employees or other transmission facility on contractors. e. In light of the Building's roof or in the Building. Landlord may require that Tenant screen specialized nature of the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Equipment, Tenant shall maintain be permitted to utilize the services of its choice for installation, operation, removal and repair of the Rooftop Equipment Equipment, the appurtenances and screening device in good the Aesthetic Screening, if any. Notwithstanding the foregoing, Tenant must provide Landlord with prior written notice of any such installation, removal or repair and conditioncoordinate such work with Landlord in order to avoid voiding or otherwise adversely affecting any warranties granted to Landlord with respect to the roof. Tenant shallIf necessary, 1005628.07/SF 375170-00002/11-24-16/mrm/mrm -64- Tenant, at its risk sole cost and expense, remove shall retain any contractor having a then existing warranty in effect on the Rooftop Equipment roof to perform such work (including all wiring related theretoto the extent that it involves the roof), within five days after or, at Tenant's option, to perform such work in conjunction with Tenant's contractor. In the occurrence of any event Landlord contemplates roof repairs that could affect Tenant's Rooftop Equipment, or which may result in an Interruption of the following events: (1) the termination of Tenant's right telecommunication service, Landlord shall formally notify Tenant at least thirty (30) days in advance (except in cases of an emergency) prior to possess the Premises;commencement of such contemplated work in order to allow Tenant to make other arrangements for such service. f. Tenant specifically acknowledges and agrees that the terms and conditions of Paragraphs 9, 14, 15 and 20 of this Lease shall apply with full force and effect to the Roof Space and any other portions of the roof accessed or utilized by Tenant, its representatives, agents, employees or contractors.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant may, Sublessor shall permit Sublessee to install and maintain at its risk and expense, install a satellite dish and related Sublessee’s sole expense communications equipment to be used solely for communications from or to Sublessee (“Communications Equipment”) and wiring HVAC equipment (collectively, “HVAC Equipment”) serving the "Rooftop ------- Equipment") Premises on the roof of the Building at a location approved by Landlord, --------- which equipment in locations acceptable to Lessor and Sublessor and in strict compliance with all applicable governmental laws and regulations and Lessor’s roof warranty. The Communications Equipment may not be leased or hired out to any third parties and shall not be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit for commercial purposes unrelated to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, Sublessee’s business conducted in the case Premises. Sublessor makes no warranties or representations to Sublessee as to the permissibility of a satellite dish, frequency any Communications Equipment on the Building under applicable law. Sublessee must remove the Communications Equipment (including any related cabling or wiring) upon the expiration or earlier termination of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements")this Sublease. If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and Sublessee shall obtain all governmental permits, consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits or authorizations necessary for the maintenance erection and operation of the Rooftop Communications Equipment while it is on and HVAC Equipment. If installation of the Communications Equipment and HVAC Equipment requires any roof penetrations, Sublessee shall use a contractor approved by Lessor and Sublessor and shall cause such work to be done in a manner that will preserve any roof warranty held by Lessor. The nature, design and specifications of any HVAC Equipment shall be subject to Lessor’s and Sublessor’s approval, which approval shall not be unreasonably withheld or delayed. Sublessee’s insurance and indemnification obligations shall apply to any rooftop installations made by Sublessee and any activities of Sublessee in relation thereto. Sublessee’s installation and use of the Communications Equipment may not in any way materially interfere with the systems of the Building and operate and maintain or the Rooftop Equipment in such a manner so as not to unreasonably interfere with any quiet enjoyment of other satellite, antennae, or other transmission facility on the Building's roof or in tenants of the Building. Landlord may require that Tenant screen Upon the Rooftop Equipment with a parapet expiration or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shallearlier termination of this Sublease, Sublessee, at its risk sole cost and expense, shall remove the Rooftop Communications Equipment, including any related cabling or wiring, and, if Sublessor so elects, the HVAC Equipment (including all wiring and any related thereto)duct work or wiring, within five days after and restore the occurrence Building to a condition comparable to its condition immediately prior to the installation of such equipment ordinary wear and tear, and damage by casualty not caused by Sublessee, its agents, employees, contractors or invitees, excepted. Sublessor shall make the same election as to whether the HVAC Equipment is to remain in place or be removed as the Lessor makes under Section 34 of the Master Lease. If Sublessee’s installation, maintenance, use, or removal of any equipment on the rooftop causes any damage to the roof or roof membrane or any other portion of the following events: (1) Building, then Sublessee shall be solely responsible for such damage and shall ensure that the termination remaining useful life of Tenant's right to possess the Premises;roof is the same as it would have been but for the penetrations.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant mayTenant, at its risk sole cost and expense, install shall have the nonexclusive right (it being understood that Landlord may grant, extend or renew similar rights to others) to install, maintain and, from time to time, replace a satellite dish reasonable amount of telecommunication equipment, dedicated HVAC and related communications other equipment and wiring (including, but not limited to lab equipment) (collectively, the "“Rooftop ------- Equipment"”) on the roof of the Building at a location approved by LandlordBuilding; provided, --------- which equipment may be used solely by Tenant and its Permitted Transferees that (A) prior to commencing any installation or Permitted Sublessees. Before installing maintenance of the Rooftop Equipment, Tenant shall submit obtain Landlord’s prior written approval (In Landlord’s reasonable discretion) of the proposed size, weight, location and screening of the Rooftop Equipment, the method for fastening the same to the roof, the method and location and size of any cables, conduit, wiring and other equipment necessary for the Rooftop Equipment to serve the Premises, Tenant’s design and specifications of the foregoing and Tenant’s plan to provide power to the Rooftop Equipment, (B) such installation and/or replacement by Tenant shall comply strictly with all Legal Requirements and the conditions of any bond or warranty maintained by Landlord on the roof (the “Roof Warranty”) and the Rules and Regulations, (C) Tenant shall use all the Rooftop Equipment solely for its approval internal use, (which approval D) Tenant shall be in Landlord's not grant any right to use the Rooftop Equipment to any other party other than its Permitted Transferee(s), and (E) Tenant shall obtain, at Tenant’s sole discretion) plans cost and specifications which (a) specify in detail expense, any necessary federal, state and municipal permits, licenses and approvals necessary for the design, location, size, and, in the case of a satellite dish, frequency installation and use of the Rooftop Equipment and (b) are sufficiently detailed deliver copies thereof to allow Landlord. The term “Rooftop Equipment” shall also include all cables, conduit, wiring and other equipment installed by Tenant in connection with any equipment installed on the roof. Tenant shall install the Rooftop Equipment in a manner that does not void or jeopardize the Rooftop Warranty and at Landlord’s request, Tenant shall obtain a written confirmation from the issuer of the Rooftop Warranty that any installation, repair, replacement and removal of the Rooftop Equipment has not voided the Rooftop Warranty. Landlord may supervise or perform any roof penetration related to the installation of any Rooftop Equipment and Landlord may charge the cost thereof to Tenant. Tenant agrees that all installation, construction, maintenance and removal shall be performed in a neat, responsible and workmanlike manner, using generally acceptable construction standards, consistent with such requirements as shall be imposed by Landlord and consistent with the plans and specifications approved by Landlord for the installation of the Rooftop Equipment Equipment. Tenant further agrees to label each cable, conduit, wiring and other equipment placed by Tenant in a good and workmanlike manner and in accordance the Building, with all Laws (identification information as required by Landlord. Tenant shall repair any damage to the "Legal Requirements"). If Landlord approves Building caused by Tenant’s installation, maintenance, replacement, use or removal of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. The Rooftop Equipment shall remain the property of Tenant and Tenant may remove the Rooftop Equipment at its cost at any time during the Term; provided, that Tenant shall thereafter maintain remove all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on at Tenant’s cost and expense upon the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, expiration or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlordtermination of this Lease. Tenant shall maintain repair and restore any damage to the Building, Project and any Common Areas caused by Tenant’s removal of the Rooftop Equipment and screening device in good repair and conditionEquipment. If Tenant shall, at its risk and expense, does not so remove the Rooftop Equipment (including all wiring related thereto), within five days after by the occurrence of any expiration or earlier termination of the following events: Term, the same shall be an Event of Default, and at Landlord’s election, the Rooftop Equipment shall be deemed abandoned and at Landlord’s option in its sole and absolute discretion, shall thereupon become the property of Landlord, in which case Landlord may possess, use, dispose of (1at Tenant’s sole cost and expense) and otherwise enjoy the termination beneficial incidents of the ownership thereof as Landlord deems appropriate. Landlord makes no warranty or representation that the Building or any portions thereof are suitable for the use of the Rooftop Equipment, it being assumed that Tenant shall satisfy itself thereof. Tenant shall protect, defend, indemnify and hold harmless Landlord from and against claims, damages, liabilities, losses, costs and expenses of every kind and nature, including attorneys’ fees, incurred by or asserted against Landlord arising out of Tenant's right to possess ’ installation, maintenance, repair, replacement, use or removal of the Premises;Rooftop Equipment, including without limitation, any voiding of the Rooftop Warranty caused by the installation, maintenance, repair, replacement, use or removal of the Rooftop Equipment, during the Term.

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant maynon-exclusive right, at its risk Tenant’s sole cost and expenseexpense (subject to the Allowance), to install a satellite dish and related communications supplemental HVAC, necessary ducting, satellite, telecommunication and/or television equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at as required for Tenant’s business in a location approved by Landlordmutually acceptable area (collectively, --------- which equipment may be used solely by Tenant the “Rooftop Equipment”) under the following conditions: (i) all plans and its Permitted Transferees or Permitted Sublessees. Before installing the specifications for any and all such Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the designincluding but not limited to, weight, configuration, location, sizemeans of installation, and, in the case of a satellite dish, frequency cabling and screening of the Rooftop Equipment and are subject to the prior reasonable approval of Landlord, which approval shall not be unreasonably withheld or delayed; (bii) are sufficiently detailed Tenant shall provide evidence to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with Landlord that Tenant has obtained all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents governmental approvals and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. ; (iii) Tenant shall thereafter maintain all permits necessary provide evidence to Landlord of insurance coverage for the maintenance installation, location, repair, removal, and operation of the Rooftop Equipment while it is on Equipment, with Landlord as an additional insured, all in form and substance reasonably approved by Landlord and such insurance shall be maintained during the Building Term of this Lease; (iv) Tenant shall indemnify, defend, protect and operate hold Landlord harmless from and maintain against any and all loss, liability, cost and expense incurred by Landlord as a result of the installation, location, repair, removal, and/or operation of the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof , except to the extent caused by Landlord’s gross negligence or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. willful misconduct; (v) Tenant shall maintain be responsible for the installation, engineering, maintenance, repair and removal of the Rooftop Equipment and screening device appurtenant equipment in good repair and condition. accordance with all Laws; (vi) any roof penetrations shall be made subject to the prior reasonable approval of Landlord, which approval shall not be unreasonably withheld or delayed; (vii) Tenant shall be responsible for any impairment of Landlord’s roof warranty as a result of installation of any such Rooftop Equipment; (viii) Tenant shall, at its risk and own expense, promptly repair any damage or wear to the roof resulting from the installation and use of the Rooftop Equipment and appurtenant equipment; (x) the operation of the Rooftop Equipment shall be for Tenant’s internal use only; and (xi) Tenant shall provide reasonable screening of the Rooftop Equipment at Tenant’s sole cost and expense as may be reasonably required by Landlord. Landlord shall grant Tenant access to the roof for such installation, maintenance, repair, and removal of the Rooftop Equipment. Upon the expiration of this Lease, Tenant shall promptly remove the Rooftop Equipment (including all wiring related thereto)and appurtenant equipment and repair any damage caused by such removal; provided, within five days after the occurrence of however, Tenant shall not be required to remove any HVAC units installed as part of the following events: (1) Rooftop Equipment. There shall be no additional charge to Tenant during the termination of Tenant's right to possess the Premises;Term or any Option Term for said roof rights.

Rooftop Equipment. Provided that Landlord shall permit Tenant complies with the terms of ----------------- this Section, Tenant may, to install and maintain at its risk and expense, install a satellite dish and related Tenant's sole expense communications equipment and wiring to be used solely for communications from or to Tenant (collectively, the "Rooftop ------- Communications Equipment") and HVAC equipment serving the Premises on the roof of the Building at a location approved by in locations acceptable to Landlord and in strict compliance with all applicable governmental laws and regulations and Landlord, --------- 's roof warranty. Landlord will not install any communications equipment on the roof without Tenant's consent which equipment shall not be unreasonably withheld. The Communications Equipment may not be leased or hired out to any third parties and shall not be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit for commercial purposes unrelated to Landlord for its approval (which approval shall be in LandlordTenant's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, business conducted in the case Premises. Landlord makes no warranties or representations to Tenant as to the permissibility of a satellite dish, frequency any Communications Equipment on the Building under applicable law. Tenant must remove the Communications Equipment (including any related cabling or wiring) upon the expiration or earlier termination of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipmentthis Lease. Tenant shall thereafter maintain be required to obtain all permits governmental permits, consents or authorizations necessary for the maintenance erection and operation of the Rooftop Communications Equipment while it is on and rooftop HVAC equipment. If installation of the Communications Equipment and rooftop HVAC equipment requires any roof penetrations, Tenant shall use a contractor approved by Landlord and shall cause such work to be done in a manner that will preserve any roof warranty held by Landlord. The nature, design and specifications of any rooftop HVAC equipment to be subject to Landlord's reasonable approval which shall not be unreasonably withheld or delayed. Tenant's insurance and indemnification obligations shall apply to any rooftop installations made by Tenant and any activities of Tenant in relation thereto. Tenant's installation and use of the Communications Equipment may not in any way materially interfere with the systems of the Building and operate and maintain or the Rooftop Equipment in such a manner so as not to unreasonably interfere with any quiet enjoyment of other satellite, antennae, or other transmission facility on the Building's roof or in tenants of the Building. Landlord may require that Tenant screen Upon the Rooftop Equipment with a parapet expiration or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shallearlier termination of this Lease, Tenant, at its risk sole cost and expense, shall remove the Rooftop Communications Equipment including any related cabling or wiring (including all wiring and if Landlord so directs, the rooftop HVAC equipment installed by Tenant and any related thereto)duct work or wiring) and restore the Building to a condition comparable to its condition immediately prior to the installation of such equipment ordinary wear and tear, within five days after the occurrence and damage by casualty not caused by Tenant, its agents, employees, contractors or invitees, excepted. If installation, maintenance, use, or removal of any equipment on the rooftop causes any damage to the roof or roof membrane or any other portion of the following events: (1) Building, then Tenant shall be solely responsible for such damage and shall ensure that the termination remaining useful life of Tenant's right to possess the Premises;roof is the same as it would have been but for the penetrations.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its risk and expensesole cost, install a satellite dish and related communications ----------------- telecommunications equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at a location approved by LandlordBuilding, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit subject to Landlord for its approval (which approval shall be in Landlord's sole discretion) prior written approval, not to be unreasonably withheld, of plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of for the Rooftop Equipment and (b) are sufficiently detailed to allow the type and placement of all cabling and wiring ancillary thereto. Tenant shall be responsible for the installation paying all reasonable out-of-pocket, third party costs associated with landlord's review of such plans and specifications for the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"if any). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required not charge tenant additional rent for the installation and operation thereof; copies use of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install space on the roof for the Rooftop Equipment. Tenant shall thereafter maintain be responsible for obtaining and maintaining all approvals, permits necessary and licenses required by fairfax county, reston or any federal, state or local government for the maintenance installation and operation of the rooftop equipment and shall pay all fees attendant thereto. If the Rooftop Equipment while it is on installed, tenant shall have sole responsibility for the maintenance, repair and replacement thereof and of all cabling and wiring ancillary thereto and Tenant will be responsible for bearing the costs to repair any damage cause to the roof or building by the installation of the Rooftop Equipment. At the expiration or earlier termination of this Lease, Tenant shall remove the rooftop equipment and all cabling and wiring ancillary thereto and shall be responsible to repair any damage caused to the roof or building in connection with such removal. Additionally, Tenant covenants and agrees that: (a) The Rooftop Equipment shall not unreasonably interfere with the standard use of the Building by other tenants; (b) Pursuant to Section 5.1, Tenant shall pay any increase in Landlord's insurance rates occasioned by the installation or operation of the Rooftop Equipment; (c) Tenant shall fully insure against damage occasioned by the installation and/or operation of the Rooftop Equipment; (d) Landlord shall retain the right to designate the placement of the Rooftop Equipment and to require such reasonable "screening" type improvements to the Building, as may be required to maintain its cosmetic appearance; (e) If Tenant accesses the roof without a designated representative of Landlord, the burden of proof for any damages subsequent to such access shall be upon Tenant; (f) Tenant agrees to indemnify Landlord (and its agents, employees, officers, representatives and shareholders) and hold Landlord (and its agents, employees, officers, representatives and shareholders) harmless from all loss, cost, damage and expense, including reasonable attorneys fees, incurred by Landlord (and its agents, employees, officers, representatives and shareholders) as a result of the installation, maintenance, presence, use or removal of any Rooftop Equipment; (g) Tenant's rights to install, operate and maintain the Rooftop Equipment as contained in such this provision shall not be transferable or assignable to an assignee or subtenant (except to a manner so as not to unreasonably interfere with any other satellite, antennae, permitted assignee or other transmission facility on subtenant under Section 20.1 or an assignee or subtenant that was approved by Landlord in writing) without the Buildingexpress written consent of Landlord which can be granted or withheld in Landlord's roof sole discretion; and (h) There shall be no change or alteration in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet without the prior written approval of Landlord, which approval may be granted or other screening device acceptable to withheld in Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;sole discretion.

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Sectionnon-exclusive right to install, Tenant may, at its risk access and expense, install a maintain one satellite dish and related communications Supplemental HVAC equipment and wiring (collectively, the "“Rooftop ------- Equipment"”) on the roof of the Building at a location approved by Landlordsubject to compliance with Applicable Laws, --------- which equipment may be used solely by in accordance with the provisions of Article 9 and further subject to Tenant paying for all costs and its Permitted Transferees expenses for such installation, access and maintenance. Tenant shall take all actions necessary to prevent any such installations from unreasonably interfering with the Rooftop Equipment of any other tenant or Permitted Sublessees. Before installing occupant of the Building and from adversely affecting applicable warranties with respect to the roof, and shall indemnify and hold harmless LandIord from any liability, cost or damage resulting from the installation, maintenance, operation or removal of the Rooftop Equipment, Tenant shall submit Upon Landlord’s request not less than three (3) months prior to Landlord for its approval the Lease Expiration Date or the end of the final Renewal Term, if exercised, or within thirty (which approval shall be in Landlord's sole discretion30) plans and specifications which (a) specify in detail the designdays after an earlier termination of this Lease, location, size, and, in as the case may be, Tenant at its expense shall remove the designated Rooftop Equipment prior to the termination of a satellite dish, frequency this Lease and restore any damage to the Premises resulting from such removal The location of the Rooftop Equipment shall be selected by Tenant and reasonably acceptable to Landlord, subject to Tenant’s rights hereunder. Tenant shall have the right to use, as available (bto the extent such needs exceed the need in Tenant’s Plans as per Section 11.10) are sufficiently detailed and at no cost, a sufficient amount of riser space running from the roof to allow the Premises for the installation purposes of connecting the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;.

Rooftop Equipment. Provided Landlord hereby grants to Tenant the non-exclusive right to occupy certain portions of the roof of the Building (the "Rooftop Premises"), as such Rooftop Premises shall be designated by Landlord in Landlord's sole and absolute discretion, so that Tenant complies with the terms of ----------------- this Sectionmay install, Tenant mayuse, at its risk operate and expense, install a maintain one or more satellite television dish or antennae (for receiving purposes only) and related communications equipment their appurtenant conduit and wiring cabling (collectively, the "Rooftop ------- Equipment"), until the expiration or termination of the term of this Lease. Landlord may, from time to time, upon ten (10) business days prior written notice to Tenant, require Tenant to relocate the Rooftop Equipment to another location on the roof of the Building as reasonably designated by Landlord (which new location shall thereafter be deemed the Rooftop Premises). Tenant shall perform any such relocation at a location approved by LandlordTenant's sole cost and expense in accordance with the terms of this Paragraph 44 and the other terms and conditions of this Lease (including, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublesseeswithout limitation, Paragraph 12 above). Before installing Notwithstanding anything to the contrary set forth in this Paragraph, neither the Rooftop Equipment, nor any work or act in connection with the Rooftop Equipment, by or on behalf of Tenant shall submit may invalidate or otherwise affect the warranty relating to the roof, unless otherwise specified by Landlord for in writing in its approval (which approval sole and absolute discretion. The Rooftop Equipment and Tenant's use of the Rooftop Premises shall be in accordance with the additional following conditions: (a) Plans and specifications with respect to the rooftop equipment (and the installation of the same) must be approved in advance by Landlord in Landlord's sole reasonable discretion. (b) The use of the Rooftop Equipment shall be restricted to Tenant's internal communications purposes only and shall not be used for profit making purposes or available for use by any party except Tenant and Tenant's employees, agents, guests, licensees and invitees. (c) Tenant shall reimburse Landlord or Landlord's agent or contractor, upon promptly following demand, for all actual and reasonable out-of-pocket costs and expenses incurred by Landlord for any architectural, engineering or supervisory services in connection with the Rooftop Equipment, including, without limitation, Landlord's review of the plans and specifications which (a) specify in detail for the designRooftop Equipment. Without limiting the foregoing, locationTenant shall promptly, sizeat its sole cost and expense, and, in repair any and all damage resulting from the case of a satellite dish, frequency presence and/or use of the Rooftop Equipment and pay to Landlord any and all other costs actually incurred by Landlord in connection with the Rooftop Equipment. Notwithstanding the foregoing, there shall be no monthly rental for the use of the Rooftop Premises for Tenant's Rooftop Equipment. (bd) are sufficiently detailed to allow for The Rooftop Equipment shall be installed, used, operated and maintained solely on the Rooftop Premises and solely at the expense of Tenant. Tenant shall perform the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with an installation program reasonably approved and supervised by Landlord or Landlord's contractor, and Tenant shall neither bring the Rooftop Equipment nor any associated equipment to the Premises or Rooftop Premises without first giving Landlord fifteen (15) business days' prior written notice of the date and time of the planned installation. Tenant shall ensure that the Rooftop Equipment shall in all Laws cases be installed, used, operated, maintained and removed in compliance with the following requirements (all as determined by Landlord in its reasonable discretion): (i) the "Legal Requirements")Rooftop Equipment shall not interfere in any way with the Building's existing engineering or other maintenance functions or duties; (ii) the Rooftop Equipment must be properly secured and installed so as not to be affected by high winds or other weather elements; (iii) the Rooftop Equipment must be properly grounded; (iv) the weight of the Rooftop Equipment shall not exceed the load limits of the Building; and (v) in no event shall the Rooftop Equipment or any appurtenant wiring or cable interfere with or otherwise adversely affect the electrical, mechanical, structural, life safety or other building systems of the Building. If Landlord approves Tenant shall bear all costs and expenses in connection with the installation, 680272v7 use, operation, maintenance and removal of the Rooftop Equipment, including all costs relating to the repair of any damage to the roof or other parts of the Building caused directly or indirectly by any such plansinstallation, Tenant ------------------ use, operation, maintenance or removal, including, without limitation, water damage or other damage resulting from weather elements. (e) The installation of the Rooftop Equipment, excluding any necessary penetration of the roof of the Building, shall install be performed by Tenant's contractor, as approved by Landlord, and at Tenant's expense (in a good and workmanlike manneror, at Landlord's option, by Landlord's contractor, at Tenant's expense), provided such installation is of a non-penetrating surface mount only. Each contractor performing any portion of Tenant's installation of the Rooftop Equipment shall be subject to Landlord's approval, which shall not be unreasonably withheld, conditioned or delayed, and shall maintain and use the insurance required by the terms of this Lease. Tenant may not install the Rooftop Equipment in a manner that penetrates the roof membrane of the Building, without Landlord's prior written consent, which consent may be withheld in Landlord's sole and absolute discretion. Without limiting Tenant's other obligations, Tenant shall reimburse Landlord for all reasonable costs associated with obtaining confirmation that Landlord's roof warranty will not be affected by any penetration. All work done in connection with any permitted roof penetration shall be performed by Landlord or Landlord's agent at Tenant's sole cost and expense. The installation of the Rooftop Equipment shall not damage the Building or existing structures thereon. Landlord may obtain the services of a structural engineer to design any additional supports required to support the Rooftop Equipment, and to monitor the installation thereof, and Tenant shall reimburse Landlord, within thirty (30) days after receipt by Tenant of an invoice, and Tenant's receipt of reasonable supporting documentation, for Landlord's actual and reasonable the cost of such services and such supports. The Rooftop Equipment shall remain the personal property of Tenant and shall be removed by Tenant prior to the expiration or earlier termination of this Lease, and Tenant shall repair any damage caused by the removal of the Rooftop Equipment and its associated wiring, cables and other components and immediately, at Tenant's sole cost and expense, restore the Rooftop Premises to the condition which existed prior to the installation of the Rooftop Equipment. (f) Tenant may, at Tenant's own cost and expense, upon at least forty-eight (48) hours prior written notice to Landlord (or such shorter period as may be reasonable in the case of an emergency), access the Rooftop Premises to repair, replace, reorient or remove the Rooftop Equipment, or replace it with generally similar equipment, provided that (i) Landlord shall have the right to have a representative of Landlord accompany Tenant or its employees, agents or contractors when they are present on the roof; (ii) any new equipment does not weigh more than the original Rooftop Equipment and can be properly accommodated on Rooftop Premises without placing materially greater demands upon the electrical, mechanical, structural, life safety or other building systems of the Building than the original Rooftop Equipment; (iii) Tenant at its cost shall restore the Building to the condition in which it was prior to such repair, reorientation, removal or replacement, and all of such repair, reorientation, removal or replacement shall be performed in accordance with Landlord's and industry standard engineering practices and by contractors or other persons approved by Landlord; and (iv) all Legal Requirements plans and designs of Tenant relating to such repair, reorientation, removal or replacement shall in any case be subject to the prior written approval of Landlord, which shall not be unreasonably withheld, conditioned or delayed. (g) Tenant hereby agrees that the Rooftop Premises shall be taken "as is", "with all faults", without any representations and warranties, and Tenant hereby agrees and warrants that it has investigated and inspected the condition of the Rooftop Premises and the suitability of same for Tenant's purposes. (h) Tenant, at Tenant's sole cost and expense, will, at all times in connection with the installation, use, operation and maintenance of the Rooftop Equipment, comply with all governmental and legal requirements affecting the installation, use, operation and maintenance of the Rooftop Equipment, including, without limitation, applicable building and fire codes, and will comply with all requirements of the Federal Aviation Administration and Federal Communications Commission in respect thereof. Tenant, at Tenant's sole cost and expense, shall be obligated to secure and obtain all consents and permits required for the installation and operation thereof; provide Landlord with copies of all such permits required permits, approvals and evidence of such consents must be submitted licenses for or with respect to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and installation or operation of the Rooftop Equipment while it prior to the commencement of any installation activities hereunder, and Tenant shall be obligated to keep in full force and effect and renew, as applicable, all required permits, approvals and licenses required hereunder. (i) During the entire period that the Rooftop Equipment is on situated in the Building Rooftop Premises, Tenant agrees to maintain commercial general public liability insurance against all claims for bodily injury, death and operate 680272v7 property damage occurring in the Rooftop Premises and maintain the area surrounding or in any way related to the Rooftop Equipment in such a manner so the amounts and in accordance with the terms set forth in this Lease and as not to unreasonably interfere with otherwise reasonably designated by Landlord; Tenant shall ensure that all insurance policies shall name Landlord and any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. party reasonably designated by Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlordas additional insureds. Tenant shall maintain pay, immediately upon demand, for the cost of any additional insurance incurred by Landlord or the increase in any premiums on insurance maintained by Landlord arising by reason of the erection or installation and maintenance of the Rooftop Equipment and screening device Equipment. (j) Landlord shall not be liable in good repair and conditionany respect for damages to either person or property nor shall Tenant be relieved from fulfilling any covenant or agreement hereof as a result of any temporary or permanent interruption of electrical service (provided, however, that Landlord shall be responsible for any actual damage to Tenant's personal property caused by the gross negligence or willful misconduct of Landlord or its agents or employees, but subject in all events to Paragraph 9(c) of the Lease). Landlord shall use reasonable diligence to restore any interruption in electrical service promptly, but Tenant shall have no claim for damages, consequential or otherwise, on account of any interruption. Tenant shallacknowledges that Landlord may, as part of its maintenance and repair obligations at its risk and expensethe Project, remove require a temporary interruption of electrical service that may cause a temporary disruption of service to Tenant or the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right Equipment. Landlord shall have no obligation hereunder to possess the Premises;provide alternate power from emergency power sources.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its Tenant's risk and expenseexpense and to be used solely by Tenant, install a satellite dish and related communications equipment and wiring style antennae of no more than five (collectively, 5) feet in diameter (the "Rooftop ------- EquipmentROOFTOP EQUIPMENT") on the roof of the Building at a location approved by Landlord, --------- which equipment may . The Rooftop Equipment shall be used solely only by Tenant and its Permitted Transferees or Permitted SublesseesTenant. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall not be in Landlord's sole discretionunreasonably withheld, conditioned or delayed to the extent such plans and specifications do not reflect alterations which affect the exterior or structure of the Building or its HVAC, plumbing or mechanical systems or its base building electrical system) plans and specifications which (aA) specify in detail the design, location, size, and, in the case of a satellite dish, frequency location and size of the Rooftop Equipment (and, with respect to the Rooftop Equipment, such specifications shall also contain the frequency of such equipment) and (bB) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws laws, regulations, restrictions (governmental or otherwise) and architectural guidelines in effect for the area in which the Building is located as they may be amended from time to time (the "Legal RequirementsLEGAL REQUIREMENTS"). None of the Rooftop Equipment shall protrude more than five (5) feet above the elevation of the roof on which it is installed and all such equipment must be painted in a color reasonably acceptable to Landlord to minimize visibility. If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any equipment (including any other satellite, antennae, or other transmission facility facility) on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device reasonably acceptable to Landlord. All electrical usage for the Rooftop Equipment shall be separately metered or, at Landlord's election, shall be placed on the same electrical meter as the Premises. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Landlord may relocate the Rooftop Equipment to another location on the roof of the Building at its sole cost and expense upon prior written notice to Tenant so long as the new location does not materially interfere with Tenant's reception received by the satellite or antennae, unless said relocation is requested because the Rooftop Equipment is unreasonably interfering with other equipment on the Building's roof or in the Building (in which case Tenant shall pay for the cost of such relocation). Upon Landlord's written request (but not otherwise), Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five (5) days after the occurrence of any of the following events: 39 (1i) the termination of Tenant's right to possess the Premises;; (ii) the termination of the Lease; (iii) the expiration of the Term; or (iv) the Premises shall be vacated by Tenant and any and all assignees and/or sublessees approved by Landlord hereunder. If Tenant fails to do so, Landlord may remove all or any part of the Rooftop Equipment and store or dispose of it in any manner Landlord deems appropriate without liability to Tenant; Tenant shall reimburse Landlord for all costs incurred by Landlord in connection therewith within ten (10) days after Landlord's request therefor. Tenant shall repair any damage to the Building caused by or relating to the Rooftop Equipment, including that which is caused by its installation, maintenance, use, or removal and shall indemnify Landlord against all liabilities, losses, damages, and costs arising from the installation, maintenance, use, or removal of the Rooftop Equipment (UNLESS THE LIABILITIES, LOSSES, DAMAGES, AND COSTS IN QUESTION WERE CAUSED BY LANDLORD'S SOLE OR GROSS NEGLIGENCE OR WILFUL MISCONDUCT). All work relating to the Rooftop Equipment shall, at Tenant's expense, be coordinated with Landlord's roofing contractor so as not to affect any warranty for the Building's roof and shall not penetrate the roof.

Rooftop Equipment. Provided that Landlord will grant Tenant complies with the terms of ----------------- this Section, Tenant may, at its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") on non-exclusive license to use the roof of the Building at for the installation, operation, maintenance and repair of one (1) communication antennae or satellite dish (the "Dish") for Tenant's own use. Tenant's rights under this subsection may not be assigned or subleased except as permitted under Section 14 hereof. Tenant's exercise of said license shall be subject to the following: (i) Landlord's approval in its sole discretion of the size, type and location of the equipment to be installed; (ii) Landlord's determination that such use shall not cause damage to or interference with the roof or any other use being made (or intended to be made) of the roof; and (iii) Tenant's compliance with the requirements of Governmental Authority and the rights of tenants under existing leases for premises in the Project and all extensions and renewals of such leases (iv) Tenant's obtaining all required municipal, regulatory and governmental approvals (v) Tenant's operation of the rooftop equipment in such a location approved by Landlord, --------- fashion that such rooftop equipment does not interfere with the rooftop equipment operations of other tenants which have installed rooftop equipment may in the Project as of the Lease Commencement Date. Such other tenants which have installed rooftop equipment in the Project shall be used solely by third party beneficiaries of such Tenant and its Permitted Transferees or Permitted Sublesseesundertaking. Before Landlord confirms that installation of the Package Air Conditioning Unit as defined in EXHIBIT "B" hereto will not preclude Tenant from installing the Rooftop Equipment, Dish. 1. Tenant shall submit to present Landlord for its approval (which approval shall be in Landlord's sole discretion) with plans and specifications which (athe "Dish Plans") specify in detail the design, location, size, and, in the case detailing its intended manner of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance Dish on the roof or parapet wall of the Building (with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike mannerlocation being at Landlord's direction), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies avoiding any penetration of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable prior to LandlordTenant's installation thereof. Tenant shall maintain be solely responsible for installing (in strict compliance with the Rooftop Equipment Dish Plans), operating, maintaining and screening device repairing the Dish in good a manner that causes no interference with or damage to the roof of the Building or any other persons or tenant's use of the roof. Tenant shall perform all of such work in a way as not to damage any Building systems including, but not limited to, the roofing system, nor shall Tenant void any warranty or guaranty relating thereto. Tenant, if required by Landlord, shall use existing Building conduits and pipes and use contractors reasonably approved by Landlord for performing such work. Tenant shall be responsible for obtaining and paying for all governmental licenses and permits required by law and regulation, and shall deliver copies thereof to Landlord as a condition precedent to its installation of the Dish, and Tenant shall comply with all applicable laws relating to the exercise of such license; Tenant shall remove the Dish and shall repair any damage resulting from such removal, and shall restore the roof, parapet and building systems, to the condition they were in (ordinary wear and tear excepted) before Tenant made such installation and exercised such license. Tenant's breach of its obligations under this subsection shall be a default under this Lease and, in addition to any other remedy that Landlord may have under this Lease, Landlord may revoke the license granted in this subsection whereupon Tenant shall cease its use of the roof and shall remove, repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;restore as set forth herein.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant may, at its risk At Tenant’s sole cost and expense, Tenant shall have the right to install a one or more satellite dish or microwave dishes or other communications, HVAC or other equipment servicing the business conducted by Tenant from within the Premises (all such equipment, including non-telecommunication equipment is, for the sake of convenience, defined collectively as the “Rooftop Equipment”) upon the roof of the Building, for Tenant’s personal use and related communications equipment and wiring (collectively, not for any other commercial purpose. In no event shall Tenant have the "Rooftop ------- Equipment") right to place any items on the roof of the Building at a location approved by Landlordfor other than use in connection with the conduct of its own business, --------- which equipment may be used solely by and in no event shall Tenant and its Permitted Transferees have the right to lease or Permitted Sublesseeslicense space on the roof in exchange for any revenues or income generated from any such lessee or licensee. Before installing the If Tenant wishes to install any Rooftop Equipment, Tenant shall submit first notify Landlord in writing and provide Landlord with all other information required for any other Alterations pursuant to Paragraph 11. Such notice shall fully describe the Rooftop Equipment, including, without limitation, its purpose, weight, size and desired location on the roof of the Building and its intended method of connection to the Premises. All of Tenant's Rooftop Equipment must be located in areas reasonably approved by Landlord for prior to any installation. Landlord also reserves the right to restrict the number and size of dishes, antennae and other Rooftop Equipment in its approval (which approval shall be in Landlord's sole reasonable discretion) plans . The physical appearance and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency size of the Rooftop Equipment and (b) are sufficiently detailed shall be subject to allow for Landlord’s reasonable approval, the location of any such installation of the Rooftop Equipment in a good shall be designated by Tenant subject to Landlord’s reasonable approval and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the to install screening around such Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shallEquipment, at its risk Tenant’s sole cost and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;as reasonably required by Landlord.

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant maynon-exclusive right, at its risk Tenant’s sole cost and expense, to install a satellite dish and related communications communication equipment and wiring (collectively, the "Rooftop ------- Equipment") on upon the roof of the Building at a location approved and use existing fiber optic and television cables presently located in the Building without any representation or warranty by LandlordLandlord as to the condition of the same (collectively, --------- which equipment may be used solely by Tenant the “Rooftop Equipment”) under the following conditions: (i) all plans and its Permitted Transferees or Permitted Sublessees. Before installing specifications for the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the designincluding but not limited to, weight, configuration, location, sizemeans of installation, and, in the case of a satellite dish, frequency cabling and screening of the Rooftop Equipment and are subject to the prior reasonable approval of Landlord; (bii) are sufficiently detailed Tenant shall provide evidence to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with Landlord that Tenant has obtained all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents governmental approvals and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. ; (iii) Tenant shall thereafter maintain all permits necessary provide evidence to Landlord of insurance coverage for the maintenance installation, location, repair, removal, and operation of the Rooftop Equipment while it is on Equipment, with Landlord as an additional insured, all in form and substance reasonably approved by Landlord and such insurance shall be maintained during the Building Term of this Lease; (iv) Tenant shall indemnify, defend, and operate hold Landlord harmless from and maintain against any and all loss, liability, cost and expense incurred by Landlord as a result of the installation, location, repair, removal, or operation of the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. ; (v) Tenant shall maintain be responsible for the installation, engineering, maintenance, repair and removal of the Rooftop Equipment and screening device appurtenant equipment in good repair accordance with all federal, state and condition. local laws, and ordinances; (vi) no roof penetrations shall be made without obtaining Landlord’s consent, which consent shall not be unreasonably withheld; (vii) Tenant shall be responsible for any impairment of Landlord’s roof warranty as a result of installation of the Rooftop Equipment; (viii) Tenant shall, at its risk and own expense, promptly repair any damage or wear to the roof resulting from the installation and use of the Rooftop Equipment and appurtenant equipment; and (x) the operation of the Rooftop Equipment shall be for Tenant’s internal use only. Landlord shall grant Tenant access to the roof for such installation, maintenance, repair, and removal of the Rooftop Equipment. Landlord shall not interfere with or allow any other tenants to interfere with Tenant’s Rooftop Equipment and shall use commercially reasonable efforts not install or allow installation of any equipment on the roof which interferes with the signal transmissions to Tenant’s Rooftop Equipment. Upon the expiration of this Lease, Tenant shall promptly remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of and appurtenant equipment and repair any of the following events: (1) the termination of Tenant's right to possess the Premises;damage caused by such removal.

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant mayright, at its risk and own expense, to install a on the roof of the Building such HVAC package units as may be required under the Plans to furnish heating, ventilation, and air conditioning to the Building and, if in accordance with applicable zoning and other laws and regulations and with private restrictions of record, one (1) antenna or satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment"), provided that (i) on the design, size, shape, location, and manner of installation of the Rooftop Equipment shall be subject to Landlord's prior written approval, to be granted or denied in Landlord's sole discretion and the Rooftop Equipment shall be adequately screened from view by an enclosure constructed of such materials as may be reasonably specified by Landlord; (ii) the installation of the Rooftop Equipment shall not damage or otherwise adversely affect the roof or any other component of the Building at a location approved by Landlordor invalidate or impair the coverage of any warranty applicable to the same, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before (iii) in installing the Rooftop Equipment, Tenant shall submit be subject to Landlord for Section 13.2 as if such installation were the installation of Alterations; (iv) after installing the Rooftop Equipment, Tenant, at its approval own expense, shall maintain the Rooftop Equipment in good condition. and repair at all times, (which approval v) Tenant's operation of any rooftop antenna or satellite dish shall not interfere with the operation of communications equipment elsewhere in, on, or near the Building, (vi) upon termination of this Lease, the Rooftop Equipment shall be subject to removal from the Building in Landlordcompliance with Section 13.3 as if the Rooftop Equipment were Alterations, (vii) Tenant's sole discretion) plans indemnification set forth in Section 19.2 shall extend to all matters arising from or related to Tenant's installation, use, maintenance, and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency removal of the Rooftop Equipment Equipment, and (bviii) are sufficiently detailed Tenant shall use the Rooftop Equipment solely for its own use and benefit and shall not grant to allow any third party the right to use the Rooftop Equipment. Tenant, at its own expense, shall obtain all permits and approvals from the applicable authorities, including, without limitation, Montgomery County, required for the Rooftop Equipment. Landlord shalx xxxxxxxxly cooperate in those efforts. All reasonable costs incurred by Landlord in regard to the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (Equipment, including, without limitation, the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such costs to seek permits and evidence of such consents must approvals, review plans and specifications, and oversee or inspect the installation, shall be submitted reimbursed by Tenant to Landlord before within fifteen (15) days after written request by Landlord. Any costs incurred by Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere connection with any other satellite, antennae, rooftop antenna or other transmission facility on satellite dish shall not be payable from the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;Improvement Allowance.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its Tenant's risk and expenseexpense and to be used solely by Tenant, install an array of antennas (not to exceed forty (40) antennas without Landlord's prior written consent, which consent shall not be unreasonably withheld or delayed), including GPS receivers, omni antennas, and a satellite dish and related communications equipment and wiring style antennae, none of which shall be more than six (collectively, 6) inches in diameter (the "Rooftop ------- EquipmentROOFTOP EQUIPMENT") on the roof or the upper edge of the rear of the Building at a location approved by Landlord, --------- which equipment may . The Rooftop Equipment shall be used solely only by Tenant and its Permitted Transferees or Permitted SublesseesTenant. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (aA) specify in detail the design, location, size, and, in the case of a satellite dish, frequency location and size of the Rooftop Equipment and (bB) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws Laws. None of the Rooftop Equipment shall protrude more than five (5) feet above the "Legal Requirements")elevation of the roof on which it is installed and all such equipment to the extent reasonably practicable must be painted in a color reasonably acceptable to Landlord to minimize visibility. If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements Laws and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any equipment (including any other satellite, antennae, or other transmission facility facility) on the Building's roof or in the Building. To the extent reasonably practicable, Landlord may require that Tenant screen the Rooftop Equipment seen from the street with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device device, if applicable, in good repair and condition. Upon Landlord's written request (but not otherwise), Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five (5) days after the occurrence of any of the following events: (1i) the termination of Tenant's right to possess the Premises;; (ii) the termination of this Lease; (iii) the expiration of the Term; or (iv) the vacation of the Premises by Tenant and any and all assignees and/or sublessees approved by Landlord hereunder for a period of greater than sixty (60) consecutive days (but prior to the termination of this Lease or Tenant's right to possession of the Premises). If Tenant fails to do so, Landlord may remove all or any part of the Rooftop Equipment and store or dispose of it in any manner Landlord deems appropriate without liability to Tenant; Tenant shall reimburse Landlord for all costs incurred by Landlord in connection therewith within ten (10) days after Landlord's request therefor. Tenant shall repair any damage to the Building caused by or relating to the Rooftop Equipment, including that which is caused by its installation, maintenance, use, or removal and shall indemnify Landlord against all liabilities, losses, damages, and costs arising from the installation, maintenance, use, or removal of the Rooftop Equipment (UNLESS THE LIABILITIES, LOSSES, DAMAGES, AND COSTS IN QUESTION WERE CAUSED BY LANDLORD'S SOLE OR GROSS NEGLIGENCE OR WILLFUL MISCONDUCT). All work relating to the Rooftop Equipment shall, at Tenant's expense, be coordinated with Landlord's roofing contractor so as not to affect any warranty for the Building's roof and shall not penetrate the roof.

Rooftop Equipment. Provided that Tenant complies with (a) Subject to the terms and conditions of ----------------- this SectionLease and the specific terms and conditions of this Section 5 of the Rider, upon Landlord’s prior written consent, not to be unreasonably withheld, conditioned or delayed, Tenant may, at its risk sole cost and expense, erect, maintain, install a and operate solely for use in Tenant’s business operations in the Premises (and not for use by third parties) during the Term, certain rooftop equipment such as satellite dish dish(es), antennas, telecommunications equipment, supplemental air conditioning units and other related communications or desired equipment and wiring (collectively, the "“Rooftop ------- Equipment"”) at locations on the roof of the Building at a as designated by Landlord (said location approved being herein referred to as the “Rooftop Equipment Space”). Such Rooftop Equipment Space shall not exceed Tenant’s Proportionate Share of the total Building rooftop space available for use by Landlord, --------- which equipment may be used solely by Tenant all Building tenants based on the relative square footage between the Premises and its Permitted Transferees or Permitted Sublesseesthe Building. Before installing the Rooftop Equipment, Tenant shall submit not install or operate any Rooftop Equipment until Tenant has obtained and submitted to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans copies of all required governmental permits, licenses, and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required authorizations necessary for the installation and operation thereof; copies . Tenant shall comply with all Governmental Requirements applicable to the operation, use, repair and maintenance of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. In addition, Tenant shall thereafter maintain comply with all permits necessary for the maintenance construction rules and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere regulations promulgated by Landlord with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlordrespect thereto. Tenant shall maintain the Rooftop Equipment and screening device in good order, condition and repair and conditionin compliance with Governmental Requirements. Landlord makes no warranties or representations to Tenant with respect to the Rooftop Equipment Space. Landlord shall not charge Tenant rent for the use of the Rooftop Equipment Space during the Term. Upon expiration of this Lease or any earlier termination of the Lease or Tenant’s right to maintain the Rooftop Equipment in the Rooftop Equipment Space under this Section 5, Tenant shall, at its risk and sole expense, remove the Rooftop Equipment and all related conduits, cables and facilities installed on or in the Building in accordance with this Section 5 and repair any damage to the Rooftop Equipment Space and the Building caused thereby. Landlord reserves the right (including all wiring related thereto), within five days after the occurrence of without obligation) to relocate any one or more of the following events: Rooftop Equipment, at Landlord’s cost, to alternate locations, provided such space remains technologically sufficient, in Landlord’s reasonable estimation. Tenant agrees to provide Tenant’s “Rooftop Equipment Plans and Specifications” (1herein so called) for Landlord’s approval prior to installation of same (which plans and specifications shall comply strictly with all applicable laws and all requirements for protecting and preserving Landlord’s warranties relating to the termination Building, including the roof). All Rooftop Equipment shall be installed within the Rooftop Equipment Space in accordance with the Rooftop Equipment Plans and Specifications previously approved by Landlord in writing, which approval shall not be unreasonably withheld, conditioned or delayed. Tenant shall not materially change, alter, modify or amend the Rooftop Equipment Plans and Specifications for the Satellite Antenna or installation thereof or otherwise alter the Rooftop Equipment or the installation and/or location of Tenant's the Rooftop Equipment without the prior written consent of Landlord. Nothing contained in this Lease shall be deemed to grant to Tenant any independent right of access to possess the Premises;Rooftop Equipment Space. All access to the roof of the Building shall under all circumstances be made through and in conjunction with Landlord or its agents and shall be subject to such reasonable controls and restrictions as Landlord may impose from time to time and consistently applied to other tenants of the Building, provided that Landlord shall impose no fees or charges on such roof access.

Rooftop Equipment. Provided that Tenant complies with (a) Subject to the terms provisions of ----------------- this Section, Tenant mayshall have the right, at no additional cost, to use for its risk own use only (and expense, install a satellite dish and related communications equipment and wiring not to transfer or assign to other third parties) up to the lesser of (collectively, i) approximately forty five percent (45%) of the "Rooftop ------- Equipment") available space on the roof of Tower 2 (which is anticipated to be approximately 5,000 square feet), or (ii) five thousand (5,000) square feet of area on the Building roof of Tower 2 to install in an area designated by Landlord on the roof of Tower 2, supplemental heating and air conditioning units, communications equipment and other equipment (collectively, “Tenant’s Equipment”). Tenant shall not be entitled to install such Tenant’s Equipment (i) if such installation would adversely affect (or in a manner that would adversely affect) any warranty with respect to the roof, (ii) (A) if such installation would adversely affect (or in a manner that would adversely affect) the structure or any of the building systems of the Building, or (B) without Landlord’s prior written consent, if such installation would require (or in a manner that would require) any structural alteration to the Building, (iii) if such installation would violate (or in a manner that would violate) any applicable Legal Requirements, (iv) unless Tenant has obtained at Tenant’s expense, and has submitted to Landlord copies of, all permits and approvals relating to such antenna and such installation, (v) unless such Tenant’s Equipment is white or of a location beige or lighter color (or is otherwise appropriately screened), (vi) unless such Tenant’s Equipment is installed, at Tenant’s sole cost and expense, by a qualified contractor chosen by Tenant and approved in advance by Landlord, --------- which approvals shall not be unreasonably withheld, conditioned or delayed, (vii) unless Tenant obtains Landlord’s prior consent to the manner in which such installation work is to be done, which consent shall not be unreasonably withheld, conditioned or delayed. The visual appearance of Tenant’s Equipment shall be consistent with other equipment may installed on the roofs of Comparable Buildings. All plans and specifications concerning such installation shall be used solely subject to Landlord’s prior written approval, which approval shall not be unreasonably withheld, conditioned or delayed. “Military mount” or ballasted mounts resting on the roof deck will not be permitted. Tenant’s Equipment must be mounted clear of the roof (such as to the penthouse walls, concrete columns or steel dunnage) with sufficient structural support for the weight of the equipment and wind loading. All cables will be neatly run in conduit mounted clear of the roof and all penetrations of the building envelope appropriately weatherproofed with high quality caulking and an escutcheon ring. (b) Tenant shall not have access to any such Tenant’s Equipment without Landlord’s prior written consent, which consent shall be granted to the extent necessary for Tenant to perform its maintenance obligations hereunder and only if Tenant is accompanied by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing Landlord’s representative (if Landlord so requests); provided, however, that in the Rooftop Equipmentevent of an emergency, Landlord shall use commercially reasonable efforts to make Landlord’s representative available within two (2) hours after receipt of Tenant’s request. (c) At all times during the Lease Term, Tenant shall submit maintain said Tenant’s Equipment in good condition. At the expiration or earlier termination of the Lease Term (or if Tenant discontinues use of such Tenant’s Equipment), Tenant shall remove such Tenant’s Equipment and related equipment from the Building. (d) Upon thirty (30) days’ prior written notice to Tenant, Landlord for its approval shall have the right to require Tenant to relocate the Tenant’s Equipment as a result of Legal Requirements or in connection with roof or other structural requirements if in Landlord’s opinion such relocation is necessary or desirable. Any such relocation (which approval including installing and relocating conduit work, cabling and other ancillary equipment) shall be in performed by Tenant at Landlord's sole discretion) plans and specifications which (a) specify in detail the design’s expense, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (of the "Legal Requirements")requirements of this Section. If Landlord approves requires that such any of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment Tenant’s communications equipment be relocated in accordance with all Legal Requirements and the preceding sentence, then Landlord shall obtain all consents and permits required provide either (i) the same line of sight for such moved communications equipment as was available prior to such relocation, or (ii) a line of sight for such moved communications equipment that is functionally equivalent to that available prior to such relocation. Landlord shall not grant any future tenant rights or access to the installation and operation thereof; copies of all roof for similar communications equipment if such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation rights or access would (x) result in blockage of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not line of sight approved for Tenant’s initial installation of its communications equipment or relocation thereof pursuant to unreasonably this paragraph, or (y) materially interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination ability of Tenant's right ’s communications equipment to possess the Premises;perform properly.

Rooftop Equipment. Provided that Tenant complies with a. During the Term, and subject to the terms and conditions of ----------------- this SectionSection 33, Tenant mayshall have the right to use its Pro Rata Share of those areas on the roof reasonably designated by Landlord as suitable for tenant installations for the installation of: (i) satellite dishes or antennas not exceeding one (1) meter in diameter and one (1) meter in height ("Communications Dishes"), at its risk (ii) air-conditioning condenser units to provide HVAC services to the Premises ("HVAC Units"), or (iii) such other equipment as reasonably required by Tenant and expenseapproved by Landlord for the use and occupancy of the Premises and the conduct of Tenant's business therefrom ("Additional Landlord Approved Equipment"). The Communications Dishes, install a satellite dish the HVAC Units, the Additional Landlord Approved Equipment and all cables, conduit and other equipment related communications equipment and wiring (collectively, to the operation of the foregoing are sometimes collectively referred to herein as the "Rooftop ------- Equipment") on . The areas of the roof of the Building on which the Rooftop Equipment is installed is referred to herein as the "Roof Sites". Landlord and Tenant acknowledge and agree that the Rooftop Equipment which may be installed by Tenant pursuant to this Section 33 does not include any equipment to be installed in the Building by Landlord pursuant to the Base Building Plans. b. Tenant shall be entitled to connect the Rooftop Equipment to the Building's electric power source; provided, however, that: (i) the method of connecting any component of the Rooftop Equipment to the Building's electric power source and the specific location in the Building at a location which such connection shall be effected, shall be subject to Landlord's prior reasonable approval; and (ii) such connection shall be undertaken by licensed contractor(s) reasonably approved by Landlord. Tenant shall cause electric current submeter(s) to be installed so as to measure the amount of electric current consumed by the Rooftop Equipment. The cost of such submeter(s) and installation, --------- which equipment may maintenance and repair thereof, the cost of all electricity consumed by the Rooftop Equipment, and the cost of any new or additional utility installations, including, without limitation, wiring and plumbing, resulting from the operation of the Rooftop Equipment, shall be used solely paid by Tenant within thirty (30) days following Landlord's written request. c. Landlord shall have the right to approve (which approval shall not be unreasonably withheld, conditioned or delayed) all aesthetic, structural, mechanical and electrical details of the Rooftop Equipment, including without limitation, the specifications, size and other characteristics of the Rooftop Equipment, the proposed method of installation of the Rooftop Equipment and the connection of the Rooftop Equipment to the Premises. Without limiting the foregoing, (i) Landlord may require the installation of additional structural support for Tenant's use of the Roof Sites and/or the installation of a walkway to provide access to the Roof Sites to the extent determined to be reasonably necessary by Landlord's engineer; (ii) Tenant shall cause the Roof Sites to be screened from view and sound in a manner reasonably directed by Landlord in Landlord's commercially reasonable discretion; and (iii) Landlord may withhold its Permitted Transferees approval of the installation of the Rooftop Equipment if the installation, operation or Permitted Sublesseesremoval of the Rooftop Equipment may (A) interfere with and/or adversely affect the base Building or any of the base Building systems, and/or void any roof warranty or other warranty or guaranty applicable to the Building; or (B) violate any Legal Requirement. Before installing In no event shall Landlord's approval of the Roof Sites and/or the installation or operation of Rooftop Equipment constitute any representation or warranty by Landlord that Tenant's use of the Roof Sites and/or the installation and operation of the Rooftop Equipment will not interfere with and/or adversely affect the base Building or any of the base Building systems, or void any warranty or guaranty applicable to the Building, and/or will not violate of Legal Requirements, and Landlord expressly disclaims any such representations or warranties or any representations or warranties with respect to the suitability or fitness of the Building and/or the Land for the installation or operation of the Rooftop Equipment. d. Upon requesting Landlord's approval of the installation of the Rooftop Equipment, Tenant shall submit provide to Landlord for its approval Landlord: (which approval shall be in Landlord's sole discretioni) mechanical details on the Rooftop Equipment and the operation thereof; (ii) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good Equipment; and workmanlike manner (iii) copies of any permits, licenses, and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all authorizations required by Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on (provided that at Tenant’s option, Tenant may pursue and obtain any necessary permits, licenses or authorizations after receiving Landlord’s approval, so long as the Building and operate and maintain the same are obtained prior to installation of any Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Equipment). e. Tenant shall maintain the Rooftop Equipment and screening device in good condition and repair and conditionat all times throughout the Term of the Lease. Tenant shallshall promptly notify Landlord in writing if it has actual knowledge that the Rooftop Equipment is not functioning properly, is causing any damage to the Building or the Land, or is in violation of any Legal Requirements. Tenant shall enter into annual service contracts with reputable engineering firms for the inspection, maintenance and repair of the Rooftop Equipment, and Tenant shall provide copies of such service contracts to Landlord promptly following Landlord's written request. Should Tenant fail to cause the Rooftop Equipment to be properly maintained in accordance with the terms and conditions of this Lease, Landlord may, but shall not be obligated to, undertake such maintenance or repairs or enter into such service contracts, and all reasonable third party out-of-pocket costs and expenses incurred by Landlord in connection with same shall constitute Additional Rent payable by Tenant hereunder. Landlord, at its risk sole option and expensediscretion, shall have the right to require Tenant, at any time prior to the expiration of Term, to cease the operation of the Rooftop Equipment and remove the Rooftop Equipment from the Roof Sites if any such equipment: (including all wiring related theretoi) interferes with and/or adversely affects the base Building or any of the base Building systems, (ii) threatens to void any warranty or guaranty applicable to the Building; (iii) at any time that Tenant is not a Full Building Tenant, generates noise or vibration which unreasonably disrupts other tenants of the Building, or interferes with any rooftop equipment being operated on the roof or elsewhere in the Building by any tenant in the Building or other licensee authorized by Landlord which other tenant or licensee installed its equipment prior to the installation of the Rooftop Equipment; (iv) violates any Legal Requirement, or (v) is not maintained in good condition and repair. f. Without limiting the other terms and conditions of this Lease but in furtherance thereof, Tenant acknowledges and agrees that Landlord has the right to remove, alter, improve, renovate or rebuild the Building and/or the Land at any time during the Term and, in connection with Landlord's exercise of such rights, Landlord shall have the right to temporarily suspend Tenant's use of the Roof Sites and/or Rooftop Equipment and/or relocate the Roof Sites and the Rooftop Equipment; provided, however, Landlord shall exercise such rights upon commercially reasonable prior notice to (not to be less than fifteen (15) days in instances other than emergency), within five days after and coordination with Tenant. In connection with Landlord's exercise of the occurrence foregoing rights, Landlord shall not be liable to Tenant for any expense, injury, loss or damage resulting from Landlord's exercise of any of the following events: (1) foregoing rights, or for damages by reason of interference with the business of Tenant or inconvenience or annoyance to Tenant or the customers or clients of Tenant, all such claims against Landlord for any and all such liability being hereby expressly released by Tenant. In exercising its rights under this paragraph, Landlord shall use commercially reasonable efforts to minimize any interference with Tenant’s business or enjoyment of its use of the Premises. g. At the expiration or earlier termination of the Lease, Tenant, at Tenant's right sole cost, shall remove the Rooftop Equipment from the Building and the Land, and Tenant shall restore the Building and Land affected thereby to possess substantially the Premises;same condition existing prior to Tenant's installation of the Rooftop Equipment, ordinary wear and tear and damage by casualty excepted. In the event Tenant fails to promptly do so, Tenant hereby authorizes Landlord to remove the Rooftop Equipment and restore the Building or Land affected thereby, and charge Tenant for all reasonable third party out-of-pocket costs and expenses incurred in connection therewith. Tenant's obligation to perform and observe this covenant shall survive the expiration or earlier termination of the Term of the Lease. h. Tenant covenants and agrees that the installation, operation and removal of the Rooftop Equipment shall be at Tenant's sole risk, cost and expense. Except to the extent resulting from the negligence or willful misconduct of Landlord or any Landlord Parties, Tenant hereby agrees to indemnify and hold Landlord and Landlord Parties harmless from and against any cost, damage, claim, liability or expense (including reasonable attorneys' fees) incurred by or claimed against Landlord and/or Landlord Parties, directly or indirectly, as a result of or in any way arising out of the use of the Roof Sites and/or the installation, operation, maintenance or removal of the Rooftop Equipment.

Rooftop Equipment. Provided that Subject to approval by all applicable governmental authorities and the provisions of this Article 18, so long as (i) this Lease is in full force and effect, (ii) no Event of Default shall have occurred, and (iii) at the time of the request submitted by Tenant complies with the terms of ----------------- this Section, Tenant may, at its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") there is space available on the roof of the Ten P.O. Square Building/10 P.O. Square Building, then Tenant shall have the right, at Tenant’s sole cost and expense, to install, use, maintain and operate on the roof of such Building one satellite dish or similar antennae and related equipment and/or an electrical generator (collectively, the “Roof Equipment”). The Roof Equipment shall be of a size and located in an area of the roof acceptable to Landlord in its reasonable discretion. The installation, use, maintenance, repair, operation and removal of the Roof Equipment shall at a location approved by Landlordall times comply with all applicable legal requirements, --------- which equipment may be and with all of the following terms and conditions: (1) If and so long as the Roof Equipment is used solely by Tenant for the operation of its business at the Property, then, except as set forth in this Article 18, there shall be no additional rent payable to Landlord in connection therewith; however, if and to the extent Tenant receives any direct revenues from third parties arising out of resulting from such Roof Equipment, including, without limitation, license fees, transmission fees or other types of fees, then Tenant shall pay all such third party revenues over to Landlord, as Additional Rent, without deduction or set-off of any kind. (2) Tenant shall be solely and exclusively responsible for all costs, expenses and charges, of every kind, of installing, operating, maintaining, repairing, replacing, and removing the Roof Equipment and Landlord shall have no liability or obligation in connection therewith. (3) If, in the judgment of Landlord, any electrical, electromagnetic, radio frequency or other interference shall result from the operation of any of the Roof Equipment, Tenant agrees that Landlord may, at Landlord’s option, shut down Tenant’s Roof Equipment upon 4 hours prior notice to Tenant; provided, however, if an emergency situation exists, which Landlord reasonably determines in its Permitted Transferees discretion to be attributable to the Roof Equipment, Landlord shall immediately notify Tenant orally, who shall act immediately to remedy the emergency situation. Should Tenant fail to so remedy said emergency situation, Landlord may then act to shut down Tenant’s Roof Equipment. Tenant shall indemnify Landlord and hold it harmless from, and Tenant waives, all expenses, costs, damages, losses, claims or Permitted Sublesseesother liabilities arising out of said shutdown. Before installing Tenant agrees to cease operations (except for intermittent testing on a schedule approved by Landlord) until the Rooftop interference has been corrected to the reasonable satisfaction of Landlord. If such interference has not been corrected to the satisfaction of Landlord within 30 days, Landlord may require that Tenant immediately remove from the Roof Space the specific item of equipment causing such interference, in which latter case the Additional Rent payable on account of the Roof Equipment shall be equitably reduced. (4) Tenant shall, at its sole cost and expense, and at its sole risk, install, operate and maintain the Roof Equipment in a good and workmanlike manner, and in compliance with all electric, communication, and safety codes, ordinances, standards, regulations and requirements, now in effect or hereafter promulgated, of the Federal Government, including, without limitation, the Federal Communications Commission (the “FCC”), the Federal Aviation Administration (“FAA”) or any successor agency of either the FCC or FAA having jurisdiction over radio or telecommunications, and of the state, city and county in which the Building is located. Tenant shall cooperate generally with Landlord and other carriers to permit the Building’s rooftop to be and remain in compliance with all FCC and OSHA rules and regulations relating to radio frequency emission levels and maximum permissible exposure, including but not limited to the rules and regulations adopted in FCC document OET 65 (which rules and regulations have also been adopted by OSHA). Neither Landlord nor its agents shall be liable to Tenant for any stoppages or shortages of electrical power furnished to the Roof Equipment or the roof area because of any act, omission or requirement of the public utility serving the Building, or the act or omission of any other tenant, invitee or licensee or their respective agents, employees or contractors, or for any other cause beyond the reasonable control of Landlord, and Tenant shall not be entitled to any rental abatement for any such stoppage or shortage of electrical power. Neither Landlord nor its agents shall have any responsibility or liability for the conduct or safety of any of Tenant’s representatives, repair, maintenance and engineering personnel while in or on any part of the Building or the roof area. (5) Landlord shall have no obligation to provide any electricity or other utilities or services to the Roof Equipment. Tenant shall be responsible for connecting the Roof Equipment to the electrical outlets currently located on the roof, and for the costs and expenses of all electricity consumed in connection with the Roof Equipment. (6) Tenant shall not make any changes, alterations, or other improvements on or to the roof of such Building without Landlord’s prior written consent in each instance, which consent, Landlord may withhold at its discretion; provided, however, in connection with the installation, operation, maintenance, repair or replacement of the Roof Equipment, Landlord’s consent shall not be unreasonably withheld. (7) Tenant shall have no right of access to the roof of such Building unless Tenant has given Landlord reasonable advance notice and unless Tenant’s representatives are accompanied by a representative of Landlord. (8) Tenant shall indemnify and hold Landlord harmless from (i) any liability, cost or expense incurred by Landlord arising out of or resulting from the erection, installation, maintenance, operation and removal of the Roof Equipment, and (ii) any and all claims, costs, damages and expenses (including reasonable attorneys’ fees) arising out of accidents, damage, injury or loss to any and all persons and property resulting from or arising in connection with the erection, installation, maintenance, operation and removal of the Roof Equipment; (9) Tenant shall promptly repair any damage caused by reason of such installation, use, maintenance, operation and removal of the Roof Equipment, including, without limitation, any repairs, restorations, maintenance, renewals or replacements of the roof (or portion thereof) necessitated by or in any way caused by or relating to such installations or the operation or presence of the Roof Equipment on the roof; (10) Tenant shall remove the Roof Equipment and repair any resulting damage to such Building (including, without limitation, restoration of the roof to the condition which existed prior to any such installation, damage by casualty and ordinary wear and tear excepted) not less than thirty (30) days prior to the expiration or earlier termination of the Term; (11) Prior to installation, Tenant shall submit to Landlord for Landlord’s approval, in its approval (which approval shall be in Landlord's sole discretion) , plans and specifications which for the Roof Equipment (a) specify in detail including, without limitation, the design, location, size, and, in the case of a satellite dish, frequency size of the Rooftop Equipment Roof Equipment). The installation, operation, maintenance, repair and (b) are sufficiently detailed to allow for the installation removal of the Rooftop Roof Equipment shall be performed by a contractor or contractors retained by Tenant, at its sole cost and expense, and approved in a good each instance by Landlord. Tenant shall be responsible for obtaining any permits and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits licenses required for the installation and operation thereof; copies of all such permits the Roof Equipment and evidence of such consents must be submitted Landlord agrees to Landlord before cooperate with Tenant begins to install accomplish the Rooftop Equipment. same, provided that Tenant shall thereafter maintain all permits necessary promptly reimburse Landlord for Landlord’s reasonable costs and expenses in connection with such cooperation; (12) Tenant’s Roof Equipment shall be for the maintenance sole use of Tenant and operation may be used only in connection with Tenant’s business within the Premises; (13) Tenant shall keep the Roof Equipment in good order and condition, at Tenant’s sole cost and expense, and shall promptly make any necessary repairs thereto; (14) If requested by Landlord from time to time during the Term of the Rooftop Lease, the Roof Equipment while it is on the Building and operate and maintain the Rooftop Equipment shall be installed or relocated in such a manner way, and with appropriate screening materials (to be provided at Tenant’s sole cost and expense) so as not to unreasonably interfere with minimize the visibility of the Roof Equipment from any other satellite, antennae, or other transmission facility vantage point on the Building's roof ground level of the Property or in the Building. Landlord may require that Tenant screen public streets adjoining the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Property; and (15) Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shallremove or relocate Tenant’s Roof Equipment, at its risk Landlord’s direction, if such Roof Equipment interferes with the communications devices of Landlord and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any other tenants and licensees in such Building that were installed prior to Tenant’s installation of the following events: (1) the termination of Tenant's right to possess the Premises;Roof Equipment.

Rooftop Equipment. Provided that Tenant complies with 33.1 Subject to the terms requirements of ----------------- this SectionArticle 33 and other applicable provisions of this Lease, Tenant may, at its risk sole cost and expenseexpense throughout the Term, install a satellite dish install, maintain, repair, replace, alter and related communications operate certain telecommunications equipment and wiring supplemental HVAC equipment customarily used by tenants of Class A office buildings (collectively, the "Rooftop ------- Roof Top Equipment") ), including such equipment as satellite dishes, on the roof of the Building at a location approved in an area not to exceed 2,000 square feet, and transmission lines, wires, cables, risers and conduits (collectively, “Conduits”) through conduit space in the Building designated by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing Landlord for the Rooftop operation of the Roof Top Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Roof Top Equipment and (b) are sufficiently detailed to allow for the Conduits and any alterations thereto or replacements thereof being called herein collectively, the “Equipment”). 33.2 Tenant hereby covenants and agrees that the initial installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (shall be subject to the "Legal Requirements"). If Landlord approves of such plansprovisions of, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for constitute Major Work under, Section 7.5, provided, however, notwithstanding the provisions of Section 7.5, Landlord agrees not to unreasonably withhold, delay or condition its approval of Tenant’s initial installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation not alter or replace any of the Rooftop Equipment while it is on after the Building initial installation thereof, unless Tenant submits to Landlord detailed plans and operate specifications therefor and maintain the Rooftop Equipment Landlord approves such plans and specifications in writing (such a manner so as approval shall not to be unreasonably interfere with any other satellitewithheld, antennae, conditioned or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlorddelayed). Tenant hereby acknowledges and agrees that the provisions of Article 7 and Section 8.3 shall maintain also govern the Rooftop installation, maintenance, repair, alteration and replacement of the Equipment to the extent such provisions are not inconsistent with the provisions of this Article 33. 33.3 Tenant hereby covenants and screening device in good repair and condition. agrees that (i) Tenant shall, at its risk sole cost and expense, remove comply with all Legal Requirements (including, without limitation, Environmental Laws) and Insurance Requirements and procure and maintain all necessary permits and approvals required in connection with the Rooftop operation, installation, maintenance, repair, alteration and replacement of the Equipment; (ii) the Equipment (including all wiring related thereto)shall not adversely affect, within five days after undermine or interfere with the occurrence structure of the Building, the roof system of the Building, or any of the following events: systems of the Building (1including, without limitation, the electrical, plumbing, heating, ventilating, air conditioning and life safety systems); (iii) Tenant shall, at its sole cost and expense, promptly repair any damage (whether structural or non-structural) caused to the roof or any other portion of the Premises or its fixtures, equipment and appurtenances by reason of the installation, maintenance, repair, alteration, replacement or operation of the Equipment (or, at Landlord’s election, Landlord shall perform such repairs and Tenant shall reimburse Landlord for the reasonable, documented costs thereof within thirty (30) days after receipt of written demand therefor from Landlord, which demand shall include reasonable evidence of the costs for which reimbursement is sought, including a copy of any applicable invoice(s)); (iv) Tenant shall pay any additional or increased insurance premiums incurred by Landlord upon thirty (30) days written notice, which notice shall include reasonable evidence of the additional or increased insurance premiums, including a copy of any applicable invoice(s), and shall obtain and pay for any additional insurance coverage for the benefit of Landlord in such amount and of such type as Landlord may reasonably require in connection with the Equipment; (v) the Equipment, and Tenant’s installation thereof, shall not invalidate any warranties or guarantees relating to the roof of the Building; (vi) Tenant shall cooperate, at Tenant’s cost and expense, with Landlord in connection with the maintenance, repair and replacement by Landlord of the roof of the Building in accordance with Landlord’s obligations under this Lease, including without limitation, by moving the Equipment, upon prior written notice from Landlord, to accommodate such maintenance, repair and replacement ; and (vii) the Equipment shall not vibrate, or cause vibrations in the Building, in a manner that damages, or may damage, the structure or other elements of the Building. 33.4 Notwithstanding anything to the contrary contained in this Lease, Tenant shall remove the Equipment upon the expiration or earlier termination of the Term and repair any damage to the roof of the Building or other portions of the Premises caused by the installation or removal of the Equipment, all at Tenant's right ’s sole cost and expense or, at Landlord’s election, Landlord shall perform such repairs and Tenant shall reimburse Landlord for the costs thereof within thirty (30) days after receipt by Tenant of Landlord’s written demand therefor. Any such demand for payment shall include reasonable evidence of the costs for which reimbursement is sought, including a copy of any applicable invoice(s) Landlord shall have no liability to possess repair or maintain the Equipment. 33.5 For the purpose of installing, maintaining, repairing, replacing, altering and operating the Equipment, Tenant shall have keyed access to the roof of the Building and access to the conduit spaces in the Building in which the Conduits are located at all times during the Term. ARTICLE 34 GENERATOR 34.1 Subject to the requirements of this Article 34 and other applicable provisions of this Lease, Tenant may, at its sole cost and expense throughout the Term, install, maintain, repair, replace, alter and operate one or more emergency electric generators and related equipment (collectively, the "Generator") to provide a back-up electricity source for certain equipment used by Tenant in the Premises;, within the area depicted on Schedule K attached hereto. Any Generator installed by Tenant pursuant to this Article 34 shall be in addition to the generator installed by Landlord as part of the Base Building/Site Work.

Rooftop Equipment. Provided that Tenant complies with (a) During the Lease Term, and subject to the terms and conditions of ----------------- this SectionSection 7, Tenant mayshall have the non-exclusive right, at its risk and expenseno additional charge, install to use a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") on portion of the roof of the Building designated by Landlord for the installation, maintenance, repair, replacement and removal of up to one (1) satellite dish or antenna not exceeding one (1) meter in diameter and four feet (4’) in height, together with the necessary conduit extending from such dish or antenna to the Premises (collectively, the “Rooftop Equipment”); provided, however, (i) the installation and operation of the Rooftop Equipment must be only for providing services to the Premises for Tenant’s exclusive use, and be permitted under, and conform to, all applicable laws, (ii) Tenant shall cause the Rooftop Equipment to be fully screened from view and sound in a manner reasonably directed by Landlord; and (iii) Landlord shall have approved in its reasonable discretion all aesthetic, structural, mechanical and electrical details of the Rooftop Equipment, including without limitation, the proposed method of attaching the Rooftop Equipment to the roof. Tenant shall be entitled to connect the Rooftop Equipment to the Building’s electric power source using riser space available generally to tenants in the Building; provided, however, that: (A) the method of connecting any component of the Rooftop Equipment to the Building’s electric power source and the specific location in the Building at a location which such connection will be effected, shall be subject to Landlord’s prior written approval; and (B) such connection shall be undertaken by licensed contractor(s) approved by Landlord (such approval not to be unreasonably withheld, conditioned or delayed). The cost of connecting the Rooftop Equipment to the Building’s electric power source and the cost of all electricity consumed by the Rooftop Equipment shall be separately metered and paid by Tenant. Tenant shall pay the cost of any such meter or submeter. (b) Prior to or contemporaneous with requesting Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing ’s approval of the installation of the Rooftop Equipment, Tenant shall submit provide to Landlord for its approval Landlord: (which approval shall be in Landlord's sole discretioni) plans and specifications which for the Rooftop Equipment; and (aii) specify in detail copies of all required governmental and quasi-governmental permits, licensees, special zoning variances, and authorizations for the design, location, size, and, in the case of a satellite dish, frequency installation and operation of the Rooftop Equipment Equipment, all of which Tenant shall obtain at its own cost and (b) are sufficiently detailed to allow for expense. Landlord may withhold its approval of the installation of the Rooftop Equipment if the installation, operation or removal of the Rooftop Equipment may (A) interfere with and/or materially and adversely affect the structure of the Building or any of the base Building systems, and/or void any warranty or guaranty applicable to the Building or the roof; or (B) cause the violation of any applicable laws. Landlord may require as a precondition to its approval of the installation of the Rooftop Equipment that Tenant (or, at Landlord’s option, Landlord) install, at Tenant’s sole cost and expense, a walkway and/or additional structural support, in a good and workmanlike manner and reasonably determined by Landlord’s engineer in accordance with all Laws its sole discretion, to the portion of the Roof on which Tenant desires to install the Rooftop Equipment. (the "Legal Requirements"). If Landlord approves of such plans, c) Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance good condition and repair throughout the Lease Term. (d) Landlord shall have access to the portion of the roof on which the Rooftop Equipment is located in order to inspect the Rooftop Equipment and the roof to determine, inter alia, if the Rooftop Equipment is causing damage to the roof or any other part of the Building and/or to repair the roof or remove or relocate the Rooftop Equipment. Landlord, at its sole option and discretion, may require Tenant, at any time prior to the expiration of this Lease, to terminate the operation of the Rooftop Equipment if any such equipment (i) interferes with and/or adversely affects the base Building or any of the base Building systems, (ii) threatens to void any warranty or guaranty applicable to the Building or the roof; (iii) generates noise or vibration which disrupts other tenants of the Building, or is interfering with any rooftop equipment being operated on the roof or elsewhere in the Building by any tenant in the Building or other licensee authorized by Landlord; (iv) violates any applicable laws, or (v) is not maintained in good condition and repair. Without limiting the other terms and conditions of this Lease but in furtherance thereof, Tenant acknowledges and agrees that Landlord has the right to remove, alter, improve, renovate or rebuild the common areas of the Building at any time during the Lease Term. In connection with Landlord’s exercise of the foregoing right, Landlord shall have the right, upon fifteen (15) days prior notice to Tenant, to temporarily suspend Tenant’s use of the Rooftop Equipment and/or relocate the Rooftop Equipment. In connection with Landlord’s exercise of the foregoing rights, Landlord shall not be liable to Tenant for any expense, injury, loss or damage resulting from Landlord’s exercise of any of the foregoing rights, or for damages by reason of interference with the business of Tenant or inconvenience or annoyance to Tenant or the customers or clients of Tenant, all Legal Requirements such claims against Landlord for any and all such liability being hereby expressly released by Tenant. (e) Tenant acknowledges that the rights contained in this Section 7 are non-exclusive, and that Landlord may grant such rights to any other tenant in the Building or any other licensee of Landlord’s choice (whether or not such licensee is a tenant of the Building). (f) At the expiration or earlier termination of this Lease, Tenant, at Tenant’s sole cost, shall obtain remove the Rooftop Equipment and all consents cabling and permits required other equipment relating thereto from the Building, and Tenant shall restore the area where the Rooftop Equipment was located to its condition existing prior to such installation. In the event Tenant fails to promptly do so, Tenant hereby authorizes Landlord to remove the Rooftop Equipment and all cabling and other equipment relating thereto and restore the area of the roof and the other portions of the Building affected thereby, and charge Tenant for all actual costs and expenses incurred in connection therewith. Tenant’s obligation to perform and observe this covenant shall survive the expiration or earlier termination of this Lease. (g) In no event shall Landlord’s approval of the installation or operation of Rooftop Equipment constitute any representation or warranty by Landlord that such installation and operation thereof; copies is in compliance with applicable laws or any warranty or guaranty applicable to the roof of all such permits the Building. Landlord expressly makes no representations or warranties with respect to the suitability or fitness of the roof for the Rooftop Equipment or applicable laws associated with the installation or operation of the Rooftop Equipment. (h) Tenant covenants and evidence agrees that the installation, operation, maintenance and removal of such consents must the Rooftop Equipment shall be submitted at Tenant’s sole risk, cost and expense, and Landlord assumes no liability or responsibility whatsoever with respect to Landlord before Tenant begins to install the installation, operation and removal of the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for indemnify, defend and hold Landlord harmless from and against any cost, damage, claim, liability or expense (including attorneys’ fees) incurred by or claimed against Landlord, directly or indirectly, as a result of or in any way arising from the installation, operation, maintenance and operation or removal of the Rooftop Equipment while it is on the Building and operate and maintain Equipment, including without limitation, any loss or injury resulting from transmissions from the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;Equipment.

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant maynon-exclusive right, at its risk Tenant's sole cost and expenseexpense (subject to application of the Allowance, with respect to the installation costs only), to install a satellite dish and related communications communication equipment and wiring supplemental heating, ventilation and air-conditioning systems upon the roof of the Building (collectively, the "Rooftop ------- Equipment") on under the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant following conditions: (i) all plans and its Permitted Transferees or Permitted Sublessees. Before installing specifications for the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the designincluding but not limited to, weight, configuration, location, sizemeans of installation, and, in the case of a satellite dish, frequency cabling and screening of the Rooftop Equipment and are subject to the prior reasonable approval of Landlord; (bii) are sufficiently detailed Tenant shall provide evidence to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with Landlord that Tenant has obtained all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents governmental approvals and permits required for the installation and operation thereofof the Rooftop Equipment; copies of all such permits and (iii) Tenant shall provide evidence of such consents must be submitted to Landlord before of commercially reasonable insurance coverage for the installation, location, repair, removal, and operation of the Rooftop Equipment, with Landlord as an additional insured, all in form and substance reasonably approved by Landlord and such insurance shall be maintained during the Term of this Lease; (iv) Tenant begins shall indemnify, defend, and hold Landlord harmless from and against any and all loss, liability, cost and expense incurred by Landlord as a result of the installation, location, repair, removal, or operation of the Rooftop Equipment on the Building; (v) Tenant shall be responsible for the installation, engineering, maintenance, repair and removal of the Rooftop Equipment and appurtenant equipment in accordance with all federal, state and local laws, and ordinances; (vi) no roof penetrations shall be made without obtaining Landlord's consent, which consent shall not be unreasonably withheld, conditioned or delayed; (vii) Tenant shall be responsible for any impairment of Landlord's roof warranty as a result of installation of the Rooftop Equipment except in the event that Tenant engages Landlord's preferred general contractor or roofing contractor for such installation, in which case such contractor shall take full responsibility for any such impairment; (viii) Tenant shall, at its own expense, promptly repair any damage or wear to install the roof resulting from the installation and use of the Rooftop Equipment and appurtenant equipment; and (ix) the operation of the Rooftop Equipment shall be for Tenant's internal use only. Landlord shall grant Tenant access to the roof for such installation, maintenance, repair, and removal of the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for not be obligated to pay any rental or other recurring charges with respect to the maintenance and operation use of the Rooftop Equipment while it is on roof as contemplated under this clause (b). Upon the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satelliteexpiration of this Lease, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, promptly remove the Rooftop Equipment (including all wiring related thereto)excluding any supplemental heating, within five days after the occurrence of ventilation and air-conditioning systems) and repair any of the following events: (1) the termination of Tenant's right to possess the Premises;damage caused by such removal.

Rooftop Equipment. Provided that Tenant complies with Subject to the terms following provisions of ----------------- this Section, Tenant mayshall have the right to install, at its risk operate and expensemaintain, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building (the “Roof Premises”) at Tenant’s expense and risk, a lawfully permitted satellite dish and associated equipment, a back-up generator and cables, a compressed air system and a chiller with chiller lines (collectively, the “Rooftop Equipment”), subject to Landlord’s approval of the size, weight and location approved by Landlordof same. (a) If the weight of any of the Rooftop Equipment exceeds the live load bearing capacity of the roof, --------- which equipment may be used solely by Tenant Tenant’s plans and its Permitted Transferees or Permitted Sublessees. Before installing specifications for the installation thereof shall include details of structural engineering and structural reinforcement so as to ensure the structural integrity of the roof upon installation of the Rooftop Equipment, . (b) Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) approval, a full set of engineering plans and specifications which for the proposed Rooftop Equipment installation. (ac) specify in detail the design, location, size, and, Tenant shall make all required conduit and/or cable connections between Tenant’s equipment in the case Premises and the Rooftop Equipment subject to approval of a satellite dishsuch connections by Landlord. (d) Tenant shall obtain all necessary municipal, frequency state and federal permits and authorizations required to install, maintain and operate the Rooftop Equipment and pay any changes levied by any governmental agencies which are the result of the Rooftop Equipment and (b) are sufficiently detailed to allow for and/or the installation of and/or use thereof. (e) Tenant shall maintain the Roof Premises and the Rooftop Equipment in a good state of repair. (f) Tenant shall use (at Tenant’s cost) Landlord’s roof contractor to perform and workmanlike manner and repair any penetrations necessary to the roof in accordance connection with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies removal of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. In no event will Tenant be authorized to make any penetrations that would void Landlord’s roof warranty. (g) At the expiration or earlier termination of this Lease, Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain remove the Rooftop Equipment and screening device surrender and restore the Roof Premises to Landlord in substantially as good repair and conditioncondition as when entered. (h) The liability insurance to be carried by Tenant shall include coverage for any activity on the Roof Premises. Tenant shall, at its risk shall pay any increase in rates for Landlord’s insurance resulting from the installation and expense, remove use of the Roof Premises and/or the Rooftop Equipment by Tenant. (including all wiring related thereto)i) The Rooftop Equipment shall be utilized solely on behalf of Tenant. Tenant shall not license, within five days after lease or otherwise permit the occurrence of any use of the following events: (1) the termination of Tenant's right to possess the Premises;same by any other party.

Rooftop Equipment. Provided that Upon the written request of Tenant complies with at any time during the terms Term hereof, and subject in all events to the availability of ----------------- this Sectionadequate space therefor from time to time, Tenant mayshall have the non-exclusive right, at its risk in accordance with applicable Laws, to operate, maintain, repair, replace and expense, install a satellite dish and related communications remove certain rooftop equipment and wiring (collectively, the "“Rooftop ------- Equipment"”), subject to the following terms, conditions and limitations: (i) the location of the Rooftop Equipment shall be on the roof of the Building in such location as Landlord shall reasonably direct (and shall occupy no more than Tenant’s Share of the total available roof space), and Tenant agrees that in the event Landlord requires the relocation of the Rooftop Equipment after it has been installed, Tenant agrees to relocate the same, at Landlord’s sole cost and expense, to a new location approved on the Building’s roof reasonably designated by Landlord, --------- unless such relocation is necessary to comply with applicable Laws, in which equipment may event such relocation shall be used solely by Tenant at Tenant’s sole cost and its Permitted Transferees or Permitted Sublessees. Before installing expense; (ii) except as provided in the foregoing clause, the installation, operation, maintenance, repair, replacement and removal of the Rooftop Equipment, and any attendant costs and expense, shall be the sole responsibility of Tenant; (iii) Tenant shall submit screen the Rooftop Equipment in a manner satisfactory in all respects to Landlord for so as to preserve the aesthetics and architectural harmony of the Building; (iv) prior to the installation of any such device, Tenant shall obtain, at its approval (which approval shall be in Landlord's sole discretion) plans cost and specifications which (a) specify in detail expense, all approvals, permits and licenses required by any regulatory body having authority over the design, location, size, and, in the case of a satellite dish, frequency installation or operation of the Rooftop Equipment and shall deliver evidence of the same to Landlord; (bv) are sufficiently detailed Tenant shall use contractors reasonably approved by Landlord for the installation, maintenance and removal of the Rooftop Equipment (provided that any penetrations through the Building’s roof shall, at Landlord’s option, only be performed by Landlord’s roofing contractor at Tenant’s sole cost and expense); (vi) upon the expiration or earlier termination of this Lease (but in any event, prior thereto), Tenant shall, upon Landlord’s request, remove the Rooftop Equipment and repair, to allow Landlord’s reasonable satisfaction, any damage caused by such installation, use or removal at Tenant’s sole cost and expense, and restore those portions of the roof affected thereby to the condition existing prior to such installation; (vii) Tenant and all other third parties shall be prohibited from accessing or using the Building’s roof for any purpose not permitted in this Lease, without Landlord’s prior written consent; (viii) Tenant shall not sublet, license or otherwise permit any other party to use the Rooftop Equipment, nor engage in the reselling of any services associated with the Rooftop Equipment, it being acknowledged and agreed that the Rooftop Equipment may only be utilized for use by Tenant; (ix) neither Tenant nor any agent, employee or contractor of Tenant shall have access to the Building’s roof without having given Landlord at least one (1) business day’s advance notice, and without being accompanied, at Tenant’s cost, by a representative of Landlord; and (x) such Rooftop Equipment shall not interfere with the communication or other systems of Landlord or other tenants of the Property. The size, type and location of the Rooftop Equipment shall be subject to Landlord’s approval, which shall not be unreasonably withheld so long as such Rooftop Equipment and the placement thereof does not adversely affect the structural integrity of the roof or any material provisions of Landlord’s roof warranty. Landlord’s consenting to the installation of the Rooftop Equipment at the Building is in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If no way to be interpreted as any representation by Landlord approves of that such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance will conform with all Legal Requirements and shall applicable Laws, or relieve Tenant of its obligation to obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins necessary consents, licenses or other approvals necessary to install the and operate such Rooftop Equipment. Tenant further agrees (a) to cause its insurance required hereunder to be extended to include the Rooftop Equipment, and (b) that Tenant’s waiver and indemnity obligations hereunder shall thereafter maintain all permits necessary for extend to any loss, liability or claim resulting from the installation, operation, maintenance and operation removal of the such Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the BuildingEquipment. Landlord may require that Tenant screen the Rooftop Equipment with a parapet shall not impose any fees or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;rental costs for said roof rights.

Rooftop Equipment. Provided that Subject to the following provisions hereof, Tenant complies shall have the exclusive right from time to time during the Lease Term within the portion of the roof of the Building shown on Exhibit I-1 attached hereto (“Tenant’s Rooftop Area”) to (i) maintain, repair and replace the three (3) existing supplemental HVAC units (“Tenant’s HVAC Equipment”) located on the portion of the roof of the Building shown on Exhibit I-2 attached hereto, (ii) maintain, repair and replace the existing emergency generator and diesel fuel tank (collectively, “Tenant’s Generator”) located on the portion of the roof of the Building shown on Exhibit I-2 attached hereto and (iii) install, maintain, repair and replace equipment for telecommunications, data transmission and other similar technologies, in each case to be utilized by Tenant, for the purpose of Tenant’s conduct of the Permitted Uses within the Premises and/or within other premises leased by Tenant in the Xxxxxxx Square, Cambridge area, and by its permitted subtenants and assignees and Permitted Transferees (as herein defined) hereunder only (“Tenant’s Communications Equipment”). Any future replacements or installations of Tenant’s HVAC Equipment shall be located within the area shown as “Dry Coolers” on Exhibit I-1. Any future replacements or installations of Tenant’s Generator shall be located within the area shown as “Tenant’s Generator and Telecom Equipment” on Exhibit I-1. Any future replacements or installations of Tenant’s Communications Equipment shall be located within the area shown as “Tenant’s Generator and Telecom Equipment” and/or the area shown as “Dry Coolers” on Exhibit I-1. In connection with the terms installation of ----------------- Tenant’s Communications Equipment, as well as any replacement of Tenant’s Generator or Tenant’s HVAC Equipment or installation of new generator or HVAC equipment (which new generator and/or HVAC equipment shall be subject to the provisions hereof applicable to Tenant’s Generator and/or Tenant’s HVAC Equipment, as the case may be), as contemplated in this SectionSection 2.2(D), Tenant mayshall submit to Landlord plans and specifications (including, but not limited to, design and size) therefor and the proposed exact location thereof within Tenant’s Rooftop Area (including but not limited to the size and aesthetics of such items and the architectural compatibility and relationship between the same and the general area of the Lot). Landlord shall respond within ten (10) business days after its receipt of such plans and specifications either indicating its approval (which approval shall not be unreasonably withheld, delayed or conditioned) or stating with reasonable specificity its reasons for disapproval. If Landlord fails to respond within such ten (10) business day period, Tenant may re-send such request to Landlord via registered or certified mail, return receipt requested, or recognized overnight delivery service, with the following statement in bold at the beginning of such request, “WARNING: POSSIBLE DEEMED APPROVAL NOTICE. Failure to respond to this request within ten (10) days may lead to deemed approval of such request”. Should Landlord fail to respond to such second request within ten (10) days after receipt thereof, such failure shall be deemed to be approval of such plans and specifications by Landlord. In addition to the foregoing, it is understood and agreed that the exercise of rights by Tenant under this Section 2.2(D) shall be subject to Tenant obtaining and keeping in full force and effect, at Tenant’s sole cost and expense, all permits, approvals, licenses and other determinations as shall be necessary or required under all applicable laws, ordinances, rules, regulations, statutes, by-laws, court decisions, and orders, policies and requirements of all public authorities (“Legal Requirements”) with respect the use and operation of Tenant’s HVAC Equipment, Tenant’s Generator and/or Tenant’s Communications Equipment (Landlord hereby agreeing to cooperate with Tenant in obtaining any such approval, provided that Landlord shall not be put to any third party cost or expense in connection therewith). It is further understood and agreed that rights set forth in this Section 2.2(D) with respect to Tenant’s Communications Equipment but not with respect to Tenant’s Generator or Tenant’s HVAC Equipment shall only be exercisable by Tenant on the conditions (which conditions may be waived by Landlord at any time upon written notice to Tenant) that: (i) there is no Event of Default at the time of Tenant’s request for approval of said plans and specifications hereunder; (ii) Tenant directly leases seventy-five percent (75%) or more of the Building (inclusive of any permitted subleases under Article XII below); and (iii) this Lease is still in full force and effect. Tenant shall, at Tenant’s sole cost, be responsible for the maintenance and repair of Tenant’s HVAC Equipment, Tenant’s Generator and any such Tenant’s Communications Equipment. Tenant’s HVAC Equipment, Xxxxxx’s Generator and any such Tenant’s Communications Equipment shall be at the sole risk of Tenant, except to the extent of Landlord’s negligence, Landlord having no obligation with respect to any insurance relating thereto. In performing the work necessary to maintain Tenant’s HVAC Equipment or Tenant’s Generator or to install or maintain Tenant’s Communications Equipment, Tenant shall engage a contractor approved by Landlord, which approval shall not be unreasonably withheld, delayed or conditioned; provided that, in Landlord’s reasonable judgment, such contractor will be able to preserve Landlord’s roof warranty. Landlord shall respond within ten (10) business days after its receipt of written request for Landlord’s approval of such contractor (which approval shall not be unreasonably withheld, delayed or conditioned) or stating with reasonable specificity its reasons for disapproval. If Landlord fails to respond within such ten (10) business day period, Tenant may re-send such request to Landlord via registered or certified mail, return receipt requested, or recognized overnight delivery service, with the following statement in bold at the beginning of such request, “WARNING: POSSIBLE DEEMED APPROVAL NOTICE. Failure to respond to this request within ten (10) days may lead to deemed approval of such request”. Should Landlord fail to respond to such second request within ten (10) days after receipt thereof, such failure shall be deemed to be approval of such contractor by Landlord. Tenant shall provide Landlord with evidence on an annual basis of the existence of a maintenance contract for Tenant’s Generator with a contractor approved by Landlord as aforesaid. Tenant shall have no rights to license, sublease, assign or otherwise transfer its rights to install and use Tenant’s Communications Equipment (other than to permitted subtenants and assignees and Permitted Transferees). Subject to the rights expressly granted in this subsection (D) in connection with Tenant’s Communications Equipment, Landlord hereby reserves the right (at its sole discretion but without impairing the roof rights of Tenant as set forth herein) to install and to permit others to install, use and maintain antennas and similar installations on the rooftop of the Building, provided that any agreement with a third party granting the right to install telecommunications equipment shall contain language prohibiting interference with Tenant’s Communications Equipment and shall provide Landlord with a termination right if such interference is not remedied after a reasonable period of time. If measurable interference shall occur, Tenant shall provide notice thereof to Landlord and Landlord shall use reasonable efforts to cause the same to be remedied; however, if despite such efforts the same are not remedied within a period reasonably necessary to cure such interference, Landlord shall exercise the termination right set forth in its agreement with such interfering party. Tenant’s Generator shall be used solely to provide back-up power in the event of an outage for Tenant’s lights and plugs in the Premises and dedicated heating, ventilation and air conditioning systems serving the Premises, but not for the purposes of running any life-safety systems or equipment (it being understood and agreed that such dedicated HVAC systems (including, without limitation, Tenant’s HVAC Equipment) may not function during such an outage, even if connected to Tenant’s Generator, to the extent that the base building systems are not functioning). Landlord shall have no obligation to provide any services to Tenant’s Generator. Tenant shall, at its risk sole cost and expense and otherwise in accordance with the provisions of this Section 2.2(D), arrange for all utility services required for the operation of Tenant’s Generator. Tenant, at Tenant’s expense, install a satellite dish shall repair any damage to the Building and related communications equipment the Lot resulting from Tenant’s installation (if applicable), operation, maintenance, repair, replacement or removal of Tenant’s HVAC Equipment, Tenant’s Generator and wiring Tenant’s Communications Equipment. Landlord, at Landlord’s expense and not as an Operating Expense under this Lease, shall repair any damage to the Building and the Lot resulting from Landlord’s or any such third party’s installation, operation, maintenance, repair, replacement or removal of antennas and similar installations serving parties other than Tenant as set forth in this Section 2.2(D) (collectivelyexcept to the extent such installations are utilized by Landlord solely in connection with the operation of the Building, in which event such costs may be included in Operating Expenses for the "Rooftop ------- Equipment"Building in accordance with Article VII hereof). Upon the expiration or earlier termination of the Lease Term, Tenant, at Tenant’s expense, shall remove (i) any Tenant’s HVAC Equipment installed on the roof of the Building at a location approved after the Execution Date to the extent that Landlord conditioned its consent to such installation on such removal, (ii) Tenant’s Generator and (iii) Tenant’s Communications Equipment and restore the portion of the roof and/or the Building on or in which the same were located as nearly as practicable to its condition prior to the installation thereof (reasonable wear and tear, damage by LandlordLandlord and damage by Casualty and Taking (as those terms are defined in Article XIV) excepted). Notwithstanding anything to the contrary contained herein, --------- which equipment may be used solely by Tenant and its Permitted Transferees upon the expiration or Permitted Sublessees. Before installing earlier termination of the Rooftop EquipmentLease Term, Tenant shall submit not be required to Landlord for its approval remove the following (which approval shall be in Landlord's sole discretion) plans and specifications which “Non-Removal HVAC Units”): (a) specify in detail the design, location, size, and, in three (3) supplemental HVAC units existing on the case of a satellite dish, frequency roof of the Rooftop Equipment and Building as of the Execution Date (the “Existing HVAC Units”) or (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves any replacements of such plansExisting HVAC Units, Tenant ------------------ provided that the total number of Non-Removal HVAC Units shall install never exceed three (in a good and workmanlike manner3), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;.

Rooftop Equipment. Provided that Tenant complies with At any time during the Lease Term, subject to the terms of ----------------- this SectionLease, including this Section 29.32, Tenant maymay install, at its risk Tenant's sole cost and expense, install a satellite dish certain telecommunications equipment, HVAC and other equipment to the extent reasonably related communications equipment to Tenant's use and wiring occupancy of the Premises (collectively, the "Rooftop ------- Equipment") on upon the roof of the Building. In no event shall such Rooftop Equipment installed hereunder utilize more than Tenant's Share of the commercially reasonable portion(s) of the rooftop made available for such equipment as reasonably designated by Landlord therefore. Tenant's right to utilize the roof of the Building pursuant to the terms hereof shall be non-exclusive and without any additional rent of charge. In no event shall Tenant create any roof penetrations in order to connect the Rooftop Equipment to the Premises (provided that Landlord shall make available to Tenant a commercially reasonable amount of the existing rooftop penetrations for Tenant's use in connecting its Rooftop Equipment to the Premises). The physical appearance and all specifications of the Rooftop Equipment shall be subject to Landlord's approval (which shall not be unreasonably withheld), the location of any such installation of the Rooftop Equipment shall be designated by Landlord (subject to Tenant's reasonable approval), and Landlord may require Tenant to install screening around such Rooftop Equipment, at a location approved Tenant's sole cost and expense, as reasonably designated by Landlord. Notwithstanding the foregoing, --------- which equipment may Tenant hereby agrees to attach the Rooftop Equipment to the roof in accordance with Landlord's Building standard method therefor. Tenant shall be used solely by Tenant responsible, at Tenant's sole cost and its Permitted Transferees expense, for (i) obtaining all permits or Permitted Sublessees. Before installing other governmental approvals required in connection with the Rooftop Equipment, Tenant shall submit (ii) repairing and maintaining and causing the Rooftop Equipment to Landlord for its approval comply with all Applicable Laws, (which approval shall be in Landlordiii) any repairs to the roof of the Building beyond normal wear and tear resulting from Tenant's sole discretionuse of or access to the Rooftop Equipment, and (iv) plans and specifications which (a) specify in detail prior to the designexpiration or earlier termination of this Lease, location, size, and, in the case of a satellite dish, frequency removal of the Rooftop Equipment and all associated wiring (b) are sufficiently detailed and the restoration of all affected areas to allow for the condition existing prior to the installation of thereof). In no event shall Tenant permit the Rooftop Equipment to interfere with any communications or other equipment at or servicing the Building or Project that exist as of the date of Tenant's installation (or reasonable substitutes or replacements therefor) or with any Building systems. Tenant shall indemnify, defend, protect, and hold harmless the Landlord Parties from any and all loss, cost, damage, expense and liability (including, without limitation, court costs and reasonable attorneys' fees) incurred in a good and workmanlike manner and connection with or arising from any cause related to Tenant's installation, use, repair or maintenance or any other matter relating to or in accordance connection with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk sole cost and expense, remove the all Rooftop Equipment (including any associated cabling) prior to the expiration or earlier termination of this Lease, repair all wiring damage resulting therefrom, and restore all affected areas to their condition existing prior to Tenant's installation of such Rooftop Equipment. In the event Tenant elects to exercise its right to install the Rooftop Equipment, then Tenant shall give Landlord prior notice thereof and, at Landlord's option, Landlord and Tenant shall execute an amendment to this Lease covering the matters addressed in this Section 29.32, Tenant's payment for installation costs of the Rooftop Equipment, the installation and maintenance of such Rooftop Equipment by Tenant, Tenant's indemnification of Landlord with respect thereto, Tenant's obligation to remove such Rooftop Equipment (and to ./ -/// -58- XXXXXX REALTY, L.P. [ACADIA Pharmaceuticals Inc.] restore the roof to its previously existing condition) upon the expiration or earlier termination of this Lease, and other related theretomatters. Subject to Landlord's reasonable rooftop rules and regulations (including, without limitation, Landlord's reasonable notice requirements), within five days after Tenant shall be permitted to access the occurrence of any roof of the following events: (1) Building in order to install, repair and maintain its Rooftop Equipment. The rights set forth in this Section 29.32 shall be personal to the termination of Tenant's right Original Tenant and its Permitted Transferee Assignee and may not be assigned to possess the Premises;or utilized by any other assignee, sublessee, transferee or any other party.

Rooftop Equipment. Provided that a. Tenant complies with shall have the terms of ----------------- this Section, Tenant mayexclusive right, at its risk and expenseno additional cost, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") to utilize space on the roof of the Building at a for the purpose of installing (in accordance with the terms and conditions of Paragraph 9 of this Lease), operating and maintaining rooftop equipment to be used by Tenant in connection with Tenant’s use of the Premises for the Permitted Use (collectively the “Rooftop Equipment”); provided, however, that the foregoing shall not limit Landlord’s right to maintain equipment on the roof of the Building to extent necessary to operate the Building. The exact location approved of the space on the roof to be used by Tenant shall be reasonably mutually agreed upon by Landlord and Tenant (the “Roof Space”). The installation of the Rooftop Equipment shall be subject to compliance with all Legal Requirements and the the approval of Landlord, --------- which equipment may shall not be used solely by Tenant unreasonably withheld, conditioned or delayed, in consultation with Landlord’s architect and/or engineer with respect to the plans and its Permitted Transferees or Permitted Sublessees. Before installing specifications of the Rooftop Equipment, the manner in which the Rooftop Equipment is attached to the roof of the Building and the manner in which any cables are run to and from the Rooftop Equipment. Any structural upgrades to the Building that may be necessary to accommodate the Rooftop Equipment shall be at Tenant’s sole cost and expense. Tenant shall submit be solely responsible for obtaining all necessary governmental and regulatory approvals and for the cost of installing, operating, maintaining and removing the Rooftop Equipment. If at any time Landlord, in its reasonable discretion, deems it necessary or in order to comply with Legal Requirements, Tenant shall provide and install, at Tenant’s sole cost and expense, appropriate aesthetic screening, reasonably satisfactory to Landlord, for the Rooftop Equipment (the “Aesthetic Screening”). b. Landlord agrees that Tenant shall have access to the roof of the Building and the Roof Space for its approval (the purpose of installing, maintaining, repairing and removing the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, all of which approval shall be performed by Tenant or Tenant’s authorized representative or contractors at Tenant’s sole cost 1005628.07/SF 375170-00002/11-24-16/mrm/mrm -63- and risk. It is agreed, however, that only authorized engineers, employees or properly authorized contractors of Tenant, FCC (defined below) inspectors, or persons under their direct supervision will be permitted to have access to the Roof Space. Tenant further agrees to exercise control over the people requiring access to the Roof Space in Landlord's sole discretion) plans order to keep to a minimum the number of people having access to the Roof Space and specifications which (a) specify in detail the designfrequency of their visits. It is further understood and agreed that the installation, locationmaintenance, size, and, in the case of a satellite dish, frequency operation and removal of the Rooftop Equipment Equipment, the appurtenances and (b) are sufficiently detailed the Aesthetic Screening, if any, is not permitted to allow damage the Building or the roof thereof. Tenant agrees to be responsible for any damage caused to the installation roof or any other part of the Building, which may be caused by Tenant or any of its agents or representatives. c. Tenant shall, at its sole cost and expense, and at its sole risk, install, operate and maintain the Rooftop Equipment in a good and workmanlike manner manner, and in accordance compliance with all Laws applicable Building, electric, communication, and safety codes, ordinances, standards, regulations and requirements, now in effect or hereafter promulgated, of the Federal Government, including, without limitation, the Federal Communications Commission (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner“FCC”), maintain the Federal Aviation Administration (“FAA”) or any successor agency of either the FCC or FAA having jurisdiction over radio or telecommunications, and use of the state, city and county in which the Building is located. Under this Lease, Landlord and its agents assume no responsibility for the licensing, operation and/or maintenance of Tenant’s equipment. Tenant has the responsibility of carrying out the terms of its FCC license in all respects. The Rooftop Equipment shall be connected to the Building power supply in strict compliance with all applicable Building, electrical, fire and safety codes. Except to the extent caused by Landlord’s negligence or willful misconduct, neither Landlord nor its agents shall be liable to Tenant for any stoppages or shortages of electrical power furnished to the Rooftop Equipment or the Roof Space because of any act, omission or requirement of the public utility serving the Building, or for any other cause beyond the reasonable control of Landlord, and Tenant shall not be entitled to any rental abatement for any such stoppage or shortage of electrical power. Neither Landlord nor its agents shall have any responsibility or liability for the conduct or safety of any of Tenant’s representatives, repair, maintenance and engineering personnel while in accordance with all Legal Requirements or on any part of the Building or the Roof Space. d. The Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, shall remain the personal property of Tenant, and shall obtain all consents and permits required for be removed by Tenant at its own expense at the installation and operation thereof; copies expiration or earlier termination of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop EquipmentLease. Tenant shall thereafter maintain all permits necessary for repair any damage caused by such removal, including the maintenance patching of any holes to match, as closely as possible, the color surrounding the area where the equipment and operation of the Rooftop Equipment while it is on the Building and operate and appurtenances were attached. Tenant agrees to maintain the Rooftop Equipment in such a manner so proper operating condition and maintain same in satisfactory condition as not to unreasonably interfere with any other satelliteappearance and safety. Tenant agrees that at all times during the Lease term, antennaeit will keep the roof of the Building and the Roof Space free of all trash or waste materials produced by Tenant or Tenant’s agents, employees or other transmission facility on contractors. e. In light of the Building's roof or in the Building. Landlord may require that Tenant screen specialized nature of the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Equipment, Tenant shall maintain be permitted to utilize the services of its choice for installation, operation, removal and repair of the Rooftop Equipment Equipment, the appurtenances and screening device in good the Aesthetic Screening, if any. Notwithstanding the foregoing, Tenant must provide Landlord with prior written notice of any such installation, removal or repair and conditioncoordinate such work with Landlord in order to avoid voiding or otherwise adversely affecting any warranties granted to Landlord with respect to the roof. Tenant shallIf necessary, 1005628.07/SF 375170-00002/11-24-16/mrm/mrm -64- Tenant, at its risk sole cost and expense, remove shall retain any contractor having a then existing warranty in effect on the Rooftop Equipment roof to perform such work (including all wiring related theretoto the extent that it involves the roof), within five days after or, at Tenant’s option, to perform such work in conjunction with Tenant’s contractor. In the occurrence of any event Landlord contemplates roof repairs that could affect Tenant’s Rooftop Equipment, or which may result in an Interruption of the following events: Tenant’s telecommunication service, Landlord shall formally notify Tenant at least thirty (130) days in advance (except in cases of an emergency) prior to the termination commencement of such contemplated work in order to allow Tenant to make other arrangements for such service. f. Tenant specifically acknowledges and agrees that the terms and conditions of Paragraphs 9, 14, 15 and 20 of this Lease shall apply with full force and effect to the Roof Space and any other portions of the roof accessed or utilized by Tenant's right to possess the Premises;, its representatives, agents, employees or contractors.

Rooftop Equipment. Provided that Landlord shall permit Tenant complies with the terms of ----------------- this Section, Tenant may, to install and maintain at its risk and expense, install a satellite dish and related Tenant's sole expense communications equipment and wiring to be used solely for communications from or to Tenant (collectively, the "Rooftop ------- Communications Equipment") on the roof of the Building at a location approved by in locations acceptable to Landlord and in strict compliance with all applicable governmental laws and regulations and Landlord, --------- which equipment 's roof warranty. The Communications Equipment may not be leased or hired out to any third parties and shall not be used solely for commercial purposes unrelated to Tenant's business conducted in the Premises. Landlord makes no warranties or representations to Tenant as to the permissibility of any Communications Equipment on the Building under applicable law. Tenant shall be required to obtain all governmental permits, consents or authorizations necessary for the erection and operation of the Communications Equipment, if any. Upon the expiration or earlier termination of this Lease, Tenant, at its sole cost and expense, shall remove the Communications Equipment including any related cabling or wiring and restore the Building to a condition comparable to its condition immediately prior to the installation of such equipment, [*CONFIDENTIAL TREATMENT HAS BEEN REQUESTED AS TO CERTAIN PORTIONS OF THIS DOCUMENT. EACH SUCH PORTION, WHICH HAS BEEN OMITTED HEREIN AND REPLACED WITH A SERIES OF THREE ASTERISKS IN BRACKETS [***], HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.] ordinary wear and tear, and damage by Tenant and casualty not caused by Tenant, its Permitted Transferees agents, employees, contractors or Permitted Sublesseesinvitees, excepted. Before installing If installation of the Rooftop EquipmentCommunications Equipment requires any roof penetrations, Tenant shall submit use a contractor reasonably approved by Landlord and shall cause such work to Landlord for its be done in a manner that will preserve any roof warranty held by Landlord. The nature, design and specifications of any rooftop Communications Equipment to be subject to Landlord's reasonable approval (which approval shall not be unreasonably withheld or delayed. . Landlord, in Landlord's sole discretion, may permit Tenant to install and maintain, at Tenant's sole expense and in compliance with all applicable laws, additional HVAC equipment ("HVAC Equipment") plans and specifications which (a) specify in detail on the design, location, size, and, in the case of a satellite dish, frequency roof of the Rooftop Building if Tenant establishes to Landlord's satisfaction that the Building roof and structure are adequate to support the HVAC Equipment. Tenant shall provide full and complete plans for any rooftop HVAC Equipment to Landlord for its review and (b) are sufficiently detailed approval prior to allow for installing such equipment. Landlord makes no warranties or representations to Tenant as to the installation permissibility of any HVAC Equipment on the Building under applicable law or as to the ability of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements")Building to support additional rooftop HVAC Equipment. If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall be required to obtain all governmental permits, consents and permits required or authorizations necessary for the installation and operation of the HVAC Equipment and shall be solely responsible for any repair and maintenance thereof; copies of all such permits and evidence of such consents must be submitted to . Tenant shall use a contractor approved by Landlord before Tenant begins to install the Rooftop EquipmentHVAC Equipment and shall cause such work to be done in a manner that will not damage the roof or any other part of the Building and to preserve any roof warranty held by Landlord. Tenant's installation and use of the Communications Equipment or HVAC Equipment may not in any way interfere with the systems of the Building or the quiet enjoyment of other tenants of the Building or any other tenant's rooftop equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation acknowledges that other tenants of the Rooftop Equipment while it is Building have or will be installing antenna and related equipment in or on the Building and operate and maintain the Rooftop Equipment in Tenant agrees to cooperate with such a manner other tenants so as not to unreasonably interfere with avoid interference among users. If installation, maintenance, use, or removal of any equipment on the rooftop causes any damage to the roof or roof membrane or any other satellite, antennae, or other transmission facility on portion of the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. , then Tenant shall maintain be solely responsible for such damage and shall ensure that the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any remaining useful life of the following events: (1) roof is the termination of same as it would have been but for the penetrations. Tenant's right insurance and indemnification obligations shall apply to possess the Premises;any rooftop installations made by Tenant and any activities of Tenant in relation thereto.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant may, at its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ROOFTOP ------- EquipmentEQUIPMENT") on the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted SublesseesTenant. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant mayright, at its risk and own expense, to install on the roof of the Building such HVAC package units which are not a part of the Building Shell as may be required under the Plans to furnish heating, ventilation, and air conditioning to the Building and, if in accordance with applicable zoning and other laws and regulations and with private restrictions of record, one (1) antenna or satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment"), provided that (i) on the design, size, shape, location, and manner of installation of the Rooftop Equipment shall be subject to Landlord's prior written approval, to be granted or denied in Landlord's sole discretion, and Tenant, at Tenant's sole cost, shall cause the Rooftop Equipment to be adequately screened from view by an enclosure constructed of such materials as may be reasonably specified by Landlord; (ii) the installation of the Rooftop Equipment shall not damage or otherwise adversely affect the roof or any other component of the Building at a location approved by Landlordor invalidate or impair the coverage of any warranty applicable to the same, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before (iii) in installing the Rooftop Equipment, Tenant shall submit be subject to Landlord for Section 13.2 as if such installation were the installation of Alterations (including, without limitation, the requirement that such installation comply with all applicable laws); (iv) after installing the Rooftop Equipment, Tenant, at its approval own expense, shall maintain the Rooftop Equipment in good condition and repair at all times, (which approval v) Tenant's operation of any rooftop antenna or satellite dish shall not interfere with the operation of communications equipment elsewhere in, on, or near the Building, (vi) upon termination of this Lease, the Rooftop Equipment shall be subject to removal from the Building in Landlordcompliance with Section 13.3 as if the Rooftop Equipment were Alterations, (vii) Tenant's sole discretion) plans indemnification set forth in Section 19.2 shall extend to all matters arising from or related to Tenant's installation, use, maintenance, and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency removal of the Rooftop Equipment Equipment, and (bviii) are sufficiently detailed Tenant shall use the Rooftop Equipment solely for its own use and benefit and shall not grant to allow any third party the right to use the Rooftop Equipment. Tenant, at its own expense, shall obtain all permits and approvals from the applicable authorities, including, without limitation, the City of Gaithersburg and Montgomery County, required for the Rooftop Equipment. Landlord shalx xxxxxxxxly cooperate in those efforts. All reasonable costs incurred by Landlord in regard to the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (Equipment, including, without limitation, the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such costs to seek permits and evidence of such consents must approvals, review plans and specifications, and oversee or inspect the installation, shall be submitted reimbursed by Tenant to Landlord before within fifteen (15) days after written request by Landlord. Any costs incurred by Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere connection with any other satellite, antennae, rooftop antenna or other transmission facility on satellite dish shall not be payable from the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;Improvement Allowance.

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant maynon-exclusive right, at its risk Tenant’s sole cost and expense, to install a one satellite dish and related communications equipment and wiring antenna (collectively, the "Rooftop ------- Equipment"“Dish”) on of up to twenty (20) inches in diameter upon the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing under the Rooftop Equipment, Tenant shall submit to Landlord for its approval following conditions: (which approval shall be in Landlord's sole discretioni) all plans and specifications which (a) specify in detail for the designDish, including but not limited to, weight, configuration, location, sizemeans of installation, and, in the case of a satellite dish, frequency cabling and screening of the Rooftop Equipment and Dish are subject to the prior reasonable approval of Landlord; (bii) are sufficiently detailed Tenant shall provide evidence to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with Landlord that Tenant has obtained all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents governmental approvals and permits required for the installation and operation thereofof the Dish; copies of all such permits and (iii) Tenant shall provide evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary of insurance coverage for the maintenance installation, location, repair, removal, and operation of the Rooftop Equipment while it is on Dish, with Landlord as an additional insured, all in form and substance reasonably approved by Landlord and such insurance shall be maintained during the Building Term of this Lease; (iv) Tenant shall indemnify, defend, and operate hold Landlord harmless from and maintain against any and all loss, liability, cost and expense incurred by Landlord as a result of the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satelliteinstallation, antennaelocation, repair, removal, or other transmission facility operation of the Dish on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. ; (v) Tenant shall maintain reimburse Landlord within fifteen (15) days of demand for any loss or expense or damages incurred by Landlord due to the Rooftop Equipment and screening device in good installation, location, repair, removal or operation of the Dish; (vi) Tenant shall be responsible for the installation, engineering, maintenance, repair and condition. removal of the Dish and appurtenant equipment in accordance with all federal, state and local laws, and ordinances; (vii) no roof penetrations shall be made without obtaining Landlord’s consent, which consent may be given or withheld at Landlord’s sole reasonable discretion; (viii) Tenant shall be responsible for any impairment of Landlord’s roof warranty; (ix) Tenant shall, at its risk and own expense, promptly repair any damage or wear to the roof resulting from the installation and use of the Dish and appurtenant equipment; and (x) the operation of the Dish shall be for the support of Tenant’s business in the Premises only. Landlord shall grant Tenant access to the roof for such installation, maintenance, repair, and removal. Upon the expiration of this Lease, Tenant shall promptly remove the Rooftop Equipment (including all wiring related thereto), within five days after Dish and appurtenant equipment and make any repairs to and restoration of the occurrence roof and Building as are necessary to restore the Building and roof to the condition existing prior to the installation of the Dish. Tenant’s rights herein are further subject to the rights of any existing occupants of the following events: Building or the Building roof, and in no event shall Tenant’s equipment interfere with the equipment of Landlord or other tenants or occupants of the Building or Building roof. Notwithstanding any provision of this Lease to the contrary, if Landlord reasonably determines that the Dish is interfering with the equipment of Landlord or other tenants or occupants of the Building or third parties, or causing damage to the Building, Landlord shall notify Tenant and shall afford Tenant five (15) Business Days to cure such interference. If as of the termination expiration of Tenant's said five (5) Business Day period, the interference continues, then Landlord shall have the right to possess require the Premises;removal of the Dish from the roof and Tenant must remove the Dish within ten (10) business days of its receipt of notice from Landlord. Upon Landlord’s request, Tenant shall execute a reasonable antenna license agreement. The rights to install and operate a Dish on the roof of the Building as provided herein personal to the original Tenant executing this Lease, and may not be assigned, voluntarily or involuntarily, to any person or entity other than a Permitted Transferee. Date Tenant Address

Rooftop Equipment. Provided that 34.21.1 Tenant complies with shall have the terms of ----------------- this Section, Tenant may, at its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") right to lease space on the roof of the Building at a location for the purpose of installing, operating and maintaining one (1) dish, antenna or other communication device approved by Landlord, --------- which equipment may and not more than three (3) Supplemental HVAC Units (if Tenant requires additional Supplement HVAC Units, Landlord will not unreasonably withheld its consent to the installation of additional Supplemental HVAC Units, provided that all such Supplemental HVAC Units comply with the requirements of this Section 34.21 (the “Rooftop Equipment”), on the terms of this Section 34.21. The exact location of the space on the roof to be used solely leased by Tenant shall be reasonably designated by Landlord (the “Roof Space”). Landlord reserves the right to relocate the Roof Space as reasonably necessary during the Term; provided that Landlord shall have no right to relocate Rooftop Equipment which are Supplemental HVAC Units. Landlord’s designation shall take into account Tenant’s use of the Rooftop Equipment. Notwithstanding the foregoing, Tenant’s right to install the Rooftop Equipment shall be subject to the approval rights of Landlord and its Permitted Transferees or Permitted Sublessees. Before installing Landlord’s architect and/or engineer with respect to the plans and specifications of the Rooftop Equipment, Tenant shall submit the manner in which the Rooftop Equipment is attached to Landlord for its the roof of the Building and the manner in which any cables are run to and from the Rooftop Equipment, such approval (which approval shall not to be in Landlord's sole discretion) plans unreasonably withheld, conditioned, or delayed. The precise specifications and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency general description of the Rooftop Equipment and (b) are sufficiently detailed along with all documents Landlord reasonably requires to allow for review the installation of the Rooftop Equipment (the “Plans and Specifications”) shall be submitted to Landlord for Landlord’s written approval no later than twenty (20) days before Tenant commences to install the Rooftop Equipment. If Landlord fails to respond to Tenant’s request within such ten (10)-business day period, Tenant may provide a second request for approval to Landlord, and if Landlord fails to respond within five (5) business days after receipt of Tenant’s second request, then Landlord’s approval shall be deemed given. Landlord shall grant or withhold its approval of any Rooftop Equipment within ten (10) business days from receipt of the Plans and Specifications. If Landlord fails to respond to Tenant’s request within such ten (10)-business day period, Tenant may provide a second request for approval to Landlord, and if Landlord fails to respond within five (5) business days after receipt of Tenant’s second request, then Landlord’s approval shall be deemed given (but only to the extent that Tenant’s request otherwise complies with all of the requirements of this Section 34.21). Tenant shall be solely responsible for obtaining all necessary governmental and regulatory approvals and for the cost of installing, operating, maintaining and removing the Rooftop Equipment. Tenant shall notify Landlord upon completion of the installation of the Rooftop Equipment. If Landlord determines that the Rooftop Equipment does not comply with the approved Plans and Specifications, that the Building has been damaged during installation of the Rooftop Equipment or that the installation was defective, Landlord shall notify Tenant of any noncompliance or detected problems and Tenant shall promptly cure the defects. If the Tenant fails to cure the defects within ten (10) business days following receipt of written notice, Tenant shall pay to Landlord upon demand the cost, as reasonably determined by Landlord, of correcting any defects and repairing any damage to the Building caused by such installation. If at any time Landlord, in its sole discretion, deems it necessary, Tenant shall provide and install, at Tenant’s sole cost and expense, appropriate aesthetic screening, reasonably satisfactory to Landlord, for the Rooftop Equipment (the “Aesthetic Screening”). 34.21.2 Landlord agrees that Tenant, upon reasonable prior written notice to Landlord, shall have access to the roof of the Building and the Roof Space for the purpose of installing, maintaining, repairing and removing the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, all of which shall be performed by Tenant or Tenant’s authorized representative or contractors, which shall be reasonably approved by Landlord, at Tenant’s sole cost and risk. It is agreed, however, that only authorized engineers, employees or properly authorized contractors of Tenant, FCC inspectors, or persons under their direct supervision will be permitted to have access to the roof of the Building and the Roof Space. Tenant further agrees to exercise firm control over the people requiring access to the roof of the Building and the Roof Space in order to keep to a minimum the number of people having access to the roof of the Building and the Roof Space and the frequency of their visits. 34.21.3 It is further understood and agreed that the installation, maintenance, operation and removal of the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, is not permitted to damage the Building or the roof thereof, or unreasonably interfere with the use of the Building and roof by Landlord. Tenant agrees to be responsible for any damage caused to the roof or any other part of the Building, which may be caused by Tenant or any of its agents or representatives. 34.21.4 Tenant agrees to install only equipment of types and frequencies which will not cause unreasonable interference to Landlord or other Building occupants. In the event Tenant’s equipment causes such interference, Tenant will change the frequency on which it transmits and/or receives and take any other reasonable steps necessary to eliminate the interference. If said interference cannot be eliminated within a reasonable period of time, in the judgment of Landlord, then Tenant agrees to remove the Rooftop Equipment from the Roof Space. 34.21.5 Tenant shall, at its sole cost and expense, and at its sole risk, install, operate and maintain the Rooftop Equipment in a good and workmanlike manner manner, and in accordance compliance with all Laws building, electric, communication, and safety codes, ordinances, standards, regulations and requirements, now in effect or hereafter promulgated, of the Federal Government, including, without limitation, the Federal Communications Commission (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner“FCC”), maintain the Federal Aviation Administration (“FAA”) or any successor agency of either the FCC or FAA having jurisdiction over radio or telecommunications, and use of the state, city and county in which the Building is located. Landlord and its agents assume no responsibility for the licensing, operation and/or maintenance of Tenant’s equipment. Tenant has the responsibility of carrying out the terms of its FCC license in all respects. The Rooftop Equipment shall be connected to Landlord’s power supply in strict compliance with all applicable Building, electrical, fire and safety codes. Neither Landlord nor its agents shall be liable to Tenant for any stoppages or shortages of electrical power furnished to the Rooftop Equipment or the Roof Space because of any act, omission or requirement of the public utility serving the Building, or the act or omission of any other tenant, invitee or licensee or their respective agents, employees or contractors (but expressly excluding Landlord or any Landlord Party), or for any other cause beyond the reasonable control of Landlord, and Tenant shall not be entitled to any rental abatement for any such stoppage or shortage of electrical power. Neither Landlord nor its agents shall have any responsibility or liability for the conduct or safety of any of Tenant’s representatives, repair, maintenance and engineering personnel while in accordance with all Legal Requirements or on any part of the Building or the Roof Space. 34.21.6 The Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, shall remain the personal property of Tenant, and shall obtain be removed by Tenant at its own expense at the expiration or earlier termination of this Lease or Tenant’s right to possession hereunder. Tenant shall repair any damage caused by such removal, including the patching of any holes to match, as closely as possible, the color surrounding the area where the equipment and appurtenances were attached. Tenant agrees to maintain all consents of the Tenant’s equipment placed on or about the roof or in any other part of the Building in proper operating condition and permits required for the installation maintain same in satisfactory condition as to appearance and safety in Landlord’s reasonable discretion. Such maintenance and operation thereof; copies shall be performed in a manner to avoid any unreasonable interference with any other tenants or Landlord. Tenant agrees that at all times during the Term, it will keep the roof of the Building and the Roof Space free of all such permits and evidence trash or waste materials produced by Tenant or Tenant’s agents, employees or contractors. 34.21.7 In light of such consents must be submitted to Landlord before Tenant begins to install the specialized nature of the Rooftop Equipment. , Tenant shall thereafter maintain all permits necessary be permitted to utilize the services of its choice for the maintenance installation, operation, removal and operation repair of the Rooftop Equipment while it is on Equipment, the Building appurtenances and operate and maintain the Rooftop Equipment in such a manner so as not Aesthetic Screening, if any, subject to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to reasonable approval of Landlord. Notwithstanding the foregoing, Tenant shall maintain the Rooftop Equipment and screening device in good must provide Landlord with prior written notice of any such installation, removal or repair and conditioncoordinate such work with Landlord in order to avoid voiding or otherwise adversely affecting any warranties granted to Landlord with respect to the roof. Tenant shallIf necessary, Tenant, at its risk sole cost and expense, remove shall retain any contractor having a then existing warranty in effect on the roof to perform such work (to the extent that it involves penetration of the roof), or, at Tenant’s option, to perform such work in conjunction with Tenant’s contractor. In the event the Landlord contemplates roof repairs that could affect Tenant’s Rooftop Equipment, or which may result in an interruption of the Tenant’s telecommunication service, Landlord shall formally notify Tenant at least thirty (30) days in advance (except in cases of an emergency) prior to the commencement of such contemplated work in order to allow Tenant to make other arrangements for such service. 34.21.8 Tenant shall not use the Roof Space and/or Rooftop Equipment to provide telecommunication, video, data or related services (“Communication Services”) to an unaffiliated tenant, occupant or licensee of another building, or to facilitate the provision of Communication Services on behalf of another Communication Services provider to an unaffiliated tenant, occupant or licensee of the Building or any other building. 34.21.9 The waiver and release in Section 16.1 of this Lease shall apply to the Rooftop Equipment, the indemnification obligation set forth in Section 16.2 of this Lease shall include, subject to the limitations set forth in Section 16.2 of this Lease, an obligation to indemnify Landlord against any liability, injury or damage arising out of Tenant’s use of the Rooftop Equipment, and that Tenant’s insurance obligations under Section 14 of this Lease shall apply to the Rooftop Equipment (including and Tenant assumes all wiring related theretorisk of damage to the Rooftop Equipment, and waives any claims in respect thereto against Landlord to the extent set forth in Section 14.5 of this Lease), within five days after the occurrence of . 34.21.10 If Tenant defaults under any of the following events: (1) terms and conditions of this Section 34.21, and Tenant fails to cure said default within the termination time allowed by Section 20.1 above, Landlord shall be permitted to exercise all remedies provided under the terms of Tenant's right the Lease, including removing the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, and restoring the Building and the Roof Space to possess the Premises;condition that existed prior to the installation of the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any. If Landlord removes the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, as a result of an uncured default beyond applicable cure periods, Tenant shall be liable for all costs and expenses Landlord incurs in removing the Rooftop Equipment, the appurtenances and the Aesthetic Screening, if any, and repairing any damage to the Building, the roof of the Building and the Roof Space caused by the installation, operation or maintenance of the Rooftop Equipment, the appurtenances, and the Aesthetic Screening, if any.

Rooftop Equipment. Provided that Tenant complies with During the terms of ----------------- this SectionTerm, Tenant mayshall have the non- exclusive license to procure and install, operate and maintain, all in good order and repair, at its risk sole cost and expenseexpense in all instances, install a additional HVAC equipment, antennas, satellite dish dishes and related communications accessory equipment and wiring (collectively, the "Rooftop ------- Equipment") connections on the roof of the Building at a location approved by Landlord(collectively, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the “Rooftop Equipment”), Tenant shall submit and to Landlord for its approval (which approval shall be tie-in Landlord's sole discretion) plans and specifications which (a) specify in detail said Rooftop Equipment to the design, location, size, and, in the case of a satellite dish, frequency Premises. The location of the Rooftop Equipment and (bsuch tie-ins shall be approved by Landlord in its sole discretion. Tenant acknowledges and agrees that Tenant shall continue to be obligated to perform all of its obligations under this Lease if Tenant is unable to use such Rooftop Equipment. Landlord shall use commercially reasonable efforts to accommodate Tenant’s Rooftop Equipment requirements, but Landlord shall have the right to reasonably limit and allocate Tenant’s utilization of available roof and/or other Building utility space, and, further, Tenant acknowledges that Landlord has the right to use and reserve rooftop(s) are sufficiently detailed and other Building utility space for future Building operations and other uses and operations. Landlord shall have the right, to allow for the installation of be exercised in good faith, to require Tenant to relocate the Rooftop Equipment Equipment, from time to time, at Tenant’s sole cost and expense, to an alternative location on the roof or in a good and workmanlike manner and the Building selected by Landlord in accordance with all Laws its reasonable discretion. Tenant acknowledges that Landlord may decide, in its reasonable discretion, from time to time, to repair or replace the roof (the "Legal Requirements"“Roof Repairs”). If Landlord approves of such planselects to make Roof Repairs that will in Landlord’s good faith determination require Tenant to temporarily relocate its Rooftop Equipment, Tenant ------------------ shall install (in a good shall, upon Xxxxxxxx's request and workmanlike manner)at Tenant’s sole cost and expense, maintain and use temporarily relocate the Rooftop Equipment so that the Roof Repairs may be completed; Landlord and Tenant shall use good faith efforts to cooperate in accordance connection with all Legal Requirements and shall obtain all consents and permits required for such temporary relocation in order to minimize or mitigate the installation and operation thereof; copies of all such permits and evidence effect of such consents must temporary relocation on Tenant’s business operations. The cost of removing and reinstalling same shall be submitted paid by Xxxxxx. Landlord shall not be liable to Landlord before Tenant begins to install for any losses, liability, injury, damages, claim, suit, lost profits or other costs or expenses of any kind whatsoever incurred by Tenant, or any invitee, licensee or agent of Tenant as the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation result of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;Roof Repairs.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its risk sole cost, certain additional HVAC and expense, install a satellite dish and related communications utility equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at a location approved by LandlordBuilding, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit subject to Landlord for its approval (which approval shall be in Landlord's sole discretion) prior written approval, not to be unreasonably withheld, of plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of for the Rooftop Equipment and (b) are sufficiently detailed to allow the type and placement of all cabling and wiring ancillary thereto. Landlord shall not charge Tenant Additional Rent for the installation use of space on the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required roof for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain be responsible for obtaining and maintaining all approvals, permits necessary and licenses required by Fairfax County, Reston or any federal, state or local government for the maintenance installation and operation of the Rooftop Equipment while it and shall pay all fees attendant thereto. If the Rooftop Equipment is on installed, Tenant shall have sole responsibility for the maintenance, repair and replacement thereof and of all cabling and wiring ancillary thereto and Tenant will be responsible for bearing the costs to repair any damage cause to the roof or Building by the installation of the Rooftop Equipment. Additionally, Tenant covenants and agrees that: (a) The Rooftop Equipment shall not unreasonably interfere with the standard use of the Building by other tenants; (b) Tenant shall fully insure against damage occasioned by the installation and/or operation of the Rooftop Equipment; (c) Landlord shall retain the right to designate the placement of the Rooftop Equipment and to require such reasonable "screening" type improvements to the Building, as may be required to maintain its cosmetic appearance; (d) If Tenant accesses the roof without a designated representative of Landlord, the burden of proof for any damages subsequent to such access shall be upon Tenant; (e) Tenant agrees to indemnify Landlord (and its agents, employees, officers, representatives and shareholders) and hold Landlord (and its agents, employees, officers, representatives and shareholders) harmless from all loss, cost, damage and expense, including reasonable attorneys fees, incurred by Landlord (and its agents, employees, officers, representatives and shareholders) as a result of the installation, maintenance, presence, use or removal of any Rooftop Equipment; and (f) Tenant's rights to install, operate and maintain the Rooftop Equipment as contained in such a manner so as this provision shall not be transferable or assignable to unreasonably interfere with any other satellite, antennae, an assignee or other transmission facility on subtenant (except to an assignee or subtenant that was approved by Landlord in writing) without the Buildingexpress written consent of Landlord which can be granted or withheld in Landlord's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;sole discretion.

Rooftop Equipment. Provided that (a) Without waiver of the provisions of Paragraph (a) of Section 6.2.5, as applicable, Tenant complies shall have the right, at no charge to Tenant, to install and operate rooftop equipment to be used in connection with the terms conduct of ----------------- this SectionTenant’s business, Tenant may, at its risk to be installed in the 4th Floor mechanical space and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") in an open area on the roof of the Building at a location 2892369_8 shown on the rooftop plan attached hereto as Exhibit B-1 (the 4th Floor space and the open rooftop area are referred to as the “Rooftop Equipment Area”). Tenant’s rooftop equipment shall be subject to Landlord’s reasonable approval regarding size and the manner of installation, including conformance with Landlord’s reasonable design criteria and any other reasonable requirements (including visual shielding as required by Landlord such that it cannot be seen from street level). The approved by Landlord, --------- which rooftop equipment may shall be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing referred to as the “Rooftop Equipment, ”. Tenant shall ensure that that installation of all such Rooftop Equipment will not in any way affect any roof warranty or affect the integrity of the roof. Tenant shall submit to Landlord for its approval (the plans and specifications for the Rooftop Equipment installation, which approval shall not be unreasonably withheld or delayed, and shall comply with Landlord’s requirements under Section 6.2.5, in all respects. Tenant shall also have the right to use conduit, shaft and riser space in the Building, at no charge, subject to Landlord's sole discretion) ’s approval of the plans and specifications which (a) specify in detail therefor, to connect the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed Premises to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain also pay Landlord all permits necessary for the maintenance and operation costs of electricity in connection with the Rooftop Equipment while it is on directly to the Building utility provider. Tenant shall have access to the roof at all times for the purpose of installing, operating, maintaining, repairing, or removing the Rooftop Equipment and operate and agrees to maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on good condition and repair throughout the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to LandlordTerm. Tenant shall maintain require its employees, vendors and contractors to exercise the highest level of care by industry standards to prevent voiding any roof warranties and to ensure the integrity of the roof membrane when accessing any portion of the rooftop for any reason. Additionally, Tenant agrees to abide by Landlord’s rules and policies for the use of any crane utilized in connection with all installations and repairs involving Tenant’s Rooftop Equipment. The installation, operation, maintenance, repair and removal of all Rooftop Equipment and screening device in good repair and condition. Tenant shall, shall be at its risk Tenant’s sole cost and expense, utilizing roofing contractors approved by Landlord, which approval shall not be unreasonably withheld or delayed, but which may be conditioned on Tenant utilizing Landlord’s roofing contractor if required by Landlord, and shall be performed in accordance with all applicable laws and requirements of the Town of Burlington and any other governmental agencies and public authorities having jurisdiction. (b) The open area of the rooftop outside the 4th Floor portion of the Premises as depicted on Exhibit B-1, attached hereto, is designated as a shared area for use by Landlord and Tenant. Landlord and Tenant shall each exercise reasonable efforts to prevent interference with the other’s use of the shared rooftop area. Upon the expiration or earlier termination of this Lease, Tenant shall remove the Rooftop Equipment (including all wiring related thereto)from the roof, within five days after unless at the occurrence time of any plan review, Landlord advised Tenant that the Rooftop Equipment is not required to be removed at the end of the following events: Term which Landlord shall advise Tenant of at such time as requested by Tenant. If Tenant removes the Rooftop Equipment, Tenant shall repair any damage to the roof and/or the Building caused by removal. (1c) Subject to Section 4.2.5.7, Tenant shall indemnify, defend and hold Landlord harmless from and against any and all liabilities, claims, damages, costs and expenses relating in any way to the Rooftop Equipment, including damage to the roof or any component of the Property, unless caused by the negligence or willful misconduct of Landlord, its agents, employees or contractors, or other users of the roof. The foregoing indemnification shall survive the expiration or earlier termination of Tenant's this Lease. 2892369_8 (d) The right to possess install the Rooftop Equipment may be assigned or subleased in connection with an assignment of this Lease or a subletting of the Premises;, provided, any change or addition to the approved Rooftop Equipment will require Landlord’s approval and will subject to the requirements of Section 6.2.5 of this Lease. Tenant shall be prohibited from granting any other party any right or license to use any portion of the Rooftop Equipment Area apart from this Lease.

Rooftop Equipment. Provided that Tenant complies 4.29.1 Notwithstanding anything to the contrary contained in the Rules and Regulations and subject to compliance with all applicable Governmental Requirements and the terms and conditions of ----------------- this SectionLease, and provided that such installation and roof use shall not void any roof or other warranty applicable to the Building, Tenant mayshall have the non-exclusive right to install and maintain on the roof of the Building, at its risk Tenant's sole cost and expense, install a Telecommunication Facilities consisting of one (1) telecommunication antenna or satellite dish and related communications supplemental HVAC equipment and wiring (all of the foregoing collectively, the "Rooftop ------- Equipment") and associated wiring and cabling ("Tenant's Roof Rights") on the condition that such Rooftop Equipment is specifically and exclusively for the use of Lightbridge, Inc. in the ordinary course of its business. At Tenant's expense, Landlord shall make available Tenant's Pro Rata Share of any conduit space in the vertical risers of the Building which the Landlord from time to tome makes available to tenants of the Building for purposes of running wiring and cabling in order to connect Tenant's Rooftop Equipment to the Premises. Tenant's Rooftop Equipment shall in no event occupy more than a two thousand (2,000) square foot area on the roof of the Building. No additional rental shall be payable in respect of the installation and use of such Rooftop Equipment and associated wiring and cabling. Landlord has not made any representations or promises pertaining to the suitability of the Building's rooftop for Tenant's use. Tenant, for the purpose of this paragraph and its right to rooftop access hereunder, accepts the rooftop in its "AS IS" condition. 4.29.2 Prior to installation, Tenant will obtain any and all necessary licenses, approvals, permits, etc., necessary for the installation, maintenance and use of the Rooftop Equipment. No method of installation, maintenance or removal of the Rooftop Equipment shall be permitted which Landlord reasonably anticipates shall cause any warranty held by Landlord in respect of the roof of the Building to be deemed void or otherwise adversely affected thereby, nor adversely affect the Building structure or operating systems. 4.29.3 The installation of such Rooftop Equipment and associated wiring and cabling shall be considered a Tenant Alteration for all purposes of this Lease, and without limiting the generality of the foregoing, such installation shall be subject to the terms and conditions of paragraphs 4.4 and 4.5 (Tenant Alterations and Tenant Work Performance, respectively). Prior to the installation of such Rooftop Equipment and associated wiring and cabling, Tenant shall provide Landlord with written plans and specifications showing the size of the Rooftop Equipment, its location on the roof (including plan elevations to indicate sightliness of location), operating parameters and radio frequencies (as applicable), and means of installation (including whether any penetrations of the roof shall be required for installation), all of which shall be subject to the approval of Landlord and its consultant for such matters (currently Riser Management), which approval shall not be unreasonably withheld. Tenant shall reimburse Landlord, within ten (10) Business Days after receipt of an invoice, for all reasonable out-of-pocket costs and expenses incurred by Landlord related to its review of Tenant's plans and specifications, including the fees and expenses of Landlord's consultant (regardless of whether Landlord approves Tenant's plans and specifications) and Tenant's installation. The installation of the Rooftop Equipment shall be performed at Tenant's expense by Landlord or by Tenant at Landlord's election and by contractors previously approved by Landlord. In no event shall the Landlord's approval of Tenant's plans and specifications be deemed a representation that Tenant's Rooftop Equipment or plans and specifications comply with Governmental Requirements and/or the terms of this Lease. Without limiting the foregoing, Landlord's approval of Tenant's plans and specifications shall not be deemed a representation that use of Tenant's Rooftop Equipment will not cause interference with other systems in the Building. Landlord reserves the right to require Tenant to relocate its Rooftop Equipment to another location on the roof of the Building at a location approved by Landlordupon thirty (30) days advance written notice, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipmentprovided that, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans reasonable opinion, such move is necessary in order to preserve, protect or maintain, or to avoid damage to, the roof or structural elements of the Building. 4.29.4 Tenant, through its designated and specifications which (a) specify in detail approved employees and contractors, shall be solely responsible for the design, location, size, and, in the case of a satellite dish, frequency maintenance and care of the Rooftop Equipment and (b) are sufficiently detailed to allow for associated wiring and cabling and shall maintain the installation same in a clean, sanitary and safe condition and in good repair and free of any defects at all times during this Lease. Tenant, at its sole expense and risk, shall ensure that a physical inspection of the Rooftop Equipment in occurs at intervals of no more than three (3) months and that this inspection include a good survey of structural integrity and workmanlike manner a review and in accordance with all Laws (the "Legal Requirements"). If Landlord approves correction of such plansany loose bolts, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipmentfittings or other appurtenances. Tenant shall thereafter maintain all permits necessary for provide a written certification of such inspections to Landlord not more than ten (10) days following each such inspection. In the maintenance and operation absence of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as certification, Landlord shall have the right (but not the obligation) to unreasonably interfere with any other satellite, antennae, conduct or other transmission facility on the Building's roof or in the Building. Landlord may require arrange for such an inspection and corrective action and to charge Tenant for such costs. 4.29.5 Tenant covenants upon installation that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device the signals sent and received by any of such Rooftop Equipment will not interfere with signals of other tenants' communications equipment located on the roof of (or in) the Building or in good repair the office park in which the Building is located or with other equipment associated with the operation of the Building or any other building located in such office park. Upon receipt of notice from Landlord, Tenant shall eliminate any such interference. 4.29.6 Tenant's Roof Rights shall be exercised in such manner as: (1) will not create any hazardous condition or interfere with or impair the operation of the heating, ventilation, air conditioning, plumbing, electrical, fire protection, life safety, public utilities or other systems or facilities of the Building, (2) will not directly or indirectly interfere with, delay, restrict or impose any expense, work or obligation upon Landlord in the use or operation of the Building, and condition(3) shall not in any way conflict with any Governmental Requirement now in force or which may hereafter be enacted. The Tenant shallwill, at its risk sole cost and expense, remove promptly comply or ensure that the Rooftop Equipment (including Building complies with all wiring related thereto), within five days after the occurrence Governmental Requirements or requirements of any board of fire insurance underwriters or other similar bodies now or hereafter constituted relating to or affecting Tenant's roof use. If the following events: (1) the termination rate of any insurance carried by Landlord is increased as a result of Tenant's right roof use, then Tenant from time to possess the Premises;time will pay to Landlord within ten (10) Business Days after demand by Landlord a sum equal to such increased cost.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant may, at its risk sole cost and expenseexpense (without charge, install other than as contemplated by Paragraph 5 with respect to Operating Expenses), but under Landlord’s supervision, install, maintain and from time to time replace, on a nonexclusive basis (meaning that there may be Landlord (but not other tenant) satellite dish and related communications dishes, antenna or equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building, but not unsightly, prominent towers that would detract from the Building at appearance), one or more solar panels, antennas and other solar and networking equipment solely for Tenant’s personal use in the Premises, together with a location connection to the Premises (such solar panels, antennas and other solar and networking equipment, together with any lines, wires, conduits or related improvements installed by Tenant in connection therewith, are referred to collectively as the “Rooftop Equipment”), with a non-penetrating base on the roof of the Building, in accordance with specifications reasonably approved in advance by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which provided that: (a) specify in detail Tenant shall obtain Landlord’s prior approval of the design, location, size, and, in the case of a satellite dish, frequency proposed location of the Rooftop Equipment and the method for fastening the Rooftop Equipment to the roof; (b) are sufficiently detailed to allow for Tenant shall, at its sole cost and expense, comply with all Laws, the installation conditions of any bond, warranty or insurance maintained by Landlord on the roof and any applicable requirements of any covenants, conditions and restrictions affecting the Property (whether recorded on or after the date of the Lease); (c) Tenant shall not interfere with any other Landlord satellite dish, antenna, communication facility or equipment then present on the roof; and (d) the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (shall be within the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner roof screen walls so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on be visible from the exterior of the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment at all times in a good, safe and screening device in good repair and clean condition. Tenant shall repair any damage to the Building caused by Tenant’s installation, maintenance, replacement, use or removal of the Rooftop Equipment. The Rooftop Equipment shall remain the property of Tenant during the Term and after Lease end, and Tenant shall, at its risk sole cost and expense, remove the Rooftop Equipment at Lease end, unless the Parties mutually agree that the Rooftop Equipment is to remain in place and become the sole property of Landlord at Lease end. In such event, at Lease end, the Rooftop Equipment shall be left by Tenant in place, in good condition and working order, and shall become the sole property of Landlord. If the Rooftop Equipment is removed, Tenant shall repair and restore the area(s) of the Building concerned to their condition prior to the installation of the Rooftop Equipment (including all wiring related theretosubject only to normal and reasonable wear and tear that would have occurred absent the installation of the Rooftop Equipment). If a Tenant Default occurs and, as a result, Landlord retakes possession of the Premises (with or without terminating the Lease), within five days after or if Tenant fails to remove the occurrence of any Rooftop Equipment at Lease end without the Parties’ mutual agreement as set forth above, then Landlord may, at Tenant’s sole cost and expense, remove the Rooftop Equipment and repair and restore the area(s) of the following events: (1) Building concerned to their condition prior to the termination installation of the Rooftop Equipment, and Tenant shall promptly reimburse Landlord for all costs and expenses incurred by Landlord in connection with such removal, repair and restoration and any storage of the Rooftop Equipment. Tenant shall indemnify, defend and hold harmless Landlord from and against all claims, liabilities, losses, damages, costs and expenses, including, without limitation, attorneys’ fees and costs, incurred by or asserted against Landlord and arising out of Tenant's right to possess ’s installation, maintenance, replacement, use or removal of the Premises;Rooftop Equipment.

Rooftop Equipment. Provided that (A) Tenant complies with may at any time during the terms of ----------------- this SectionTerm, Tenant mayincluding any Extended Term, at its risk sole cost and expense, locate, install a satellite dish and related communications equipment maintain on those certain antennae platforms located on the roof' of the Building on the second and wiring thirteenth floors, northwest side, of the Building (collectively, the "Rooftop ------- EquipmentRoof") , as the location of such platforms is more fully shown and described in Exhibit "HI' attached hereto, satellite antennae or dishes or other similar communication devices from time to time (the "Antennae"), subject to the reasonable approval of Landlord with respect to size, location, method of installation, and screening (to the extent such is necessary to avoid unsightly installation of such Antennae). Tenant shall pay rent for the use of such antennae platforms on the roof Roof as follows: Lease Year Annual Rent Monthly Installment ---------- ----------- ------------------- -56- *** *** *** Such rent shall be additional rent due under this Lease payable at the same time and manner as Base Rent. (B) In connection with the installation of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop EquipmentAntenna, Tenant shall submit have the right at its sole cost and expense to connect such Antennae to the Premises demised hereby by appropriate cables in locations reasonably designated by Landlord and subject to such reasonable rules and regulations as may be unposed by Landlord from time to time. Landlord agrees to make available to Tenant riser space as is reasonable and necessary for its approval such connection of the Antennae to the Premises. The location, installation, operation and maintenance of the Antennae shall (which approval i) conform to all applicable zoning and other applicable governmental guidelines, laws, codes, rules, regulations, ordinances and licensing requirements in effect from time to time as well as all reasonable architectural standards established by Landlord from time to time and any other requirements or conditions applicable to such installation or maintenance; (ii) be subject to and completed in accordance with the terms and conditions of Article 8 hereof and be performed in such manner so as to maintain all warranties on the Roof and not affect the structural components of the Roof and shall be in coordinated through Landlord's sole discretion; (iii) plans and specifications which be located on that part of the Roof as Landlord may from time to time designate away from the perimeter of -.he Roof (as such initial location is shown on Exhibit "F") so as not to be visible from street level); provided that (a) specify Landlord shall reasonably cooperate with Tenant in detail the designlocating such items so that they shall be useable and useful for their intended purposes, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed Landlord may from time to allow for the installation time require Tenant-to relocate any or all of such items to another portion or other portions of the Rooftop Equipment in a good Roof, at Landlord's sole cost and workmanlike manner and in accordance expense, so long as such relocation does not unreasonably interfere with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and Tenant's use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies and (iv) not unreasonably interfere with the use of all such permits any other communications equipment installed on the Roof -from time to time by Landlord or other tenants in the Building (and evidence Landlord agrees not to grant to other tenants of such consents must be submitted to Landlord before Tenant begins the Building or third parties the right to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is antennae or equipment on the Building and operate and maintain the Rooftop Equipment in such a manner Roof so as to adversely affect the Antennae of Tenant or the operation thereof and to require any such other tenants hereafter permitted to install similar equipment to agree not to unreasonably interfere with the use of any such communications equipment installed by other tenants, including Tenant, of the Building). Tenant shall promptly repair and restore, in a manner consistent with any warranties, any damage to the Roof or the Building resulting from or arising out of Tenant's installation, operation, maintenance and repair of the Antennae and other equipment of Tenant pursuant hereto and protect, indemnify, defend and hold Landlord and Landlord's beneficiaries and any other satelliteowner or owners of the Building and their beneficiaries, antennaeand all of their respective officers, or other transmission facility on directors, partners, agents and employees, harmless from and against any liabilities, damages, __________________________ *** Confidential Information has been omitted and filed separately with the Building's roof Securities and Exchange Commission. costs, claims, and expenses arising out of or in connection with Tenant's activities under this Article 40. (C) Tenant agrees that upon expiration of the Term hereof it will promptly remove any such Antennae and equipment and conduits, cables and other facilities connecting such Antennae and equipment to the Premises demised hereby, and repair and restore, in a manner consistent with any warranties, any damage caused to the Roof, the Building or the Property in connection with such installation or removal. Tenant and Landlord shall have continuing access to all areas of the Roof of the Building. Upon prior notice to Tenant, Landlord may require that Tenant screen shall have the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shallright, at its risk and Landlord's expense, to remove the Rooftop Equipment (including all wiring related thereto), within five days after Antennae and/or relocate the occurrence of any Antennae from time to time as may be necessary or desirable for the maintenance or repair of the following events: (1) Roof, provided that Landlord coordinates with Tenant the termination timing and location and uses reasonable efforts to mitigate any unreasonable interruption of Tenant's right to possess the Premises;satellite services.

Rooftop Equipment. Provided that (a) Tenant complies shall have the right, at no charge to Tenant, to install and operate rooftop mechanical equipment to be used in connection with the terms of ----------------- this SectionTenant’s lab uses, Tenant may, at its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") to be installed in an area on the roof of the North Building at to be designated for Tenant’s use (such area is referred to as the “Rooftop Equipment Area”). Following the execution of this Amendment, Landlord and Xxxxxx shall work together, each acting reasonably and in good faith, to agree on a rooftop plan which will (i) determine a mutually acceptable location approved by Landlord, --------- which equipment may be used solely by Tenant for placement of the Rooftop Equipment (defined below) and its Permitted Transferees or Permitted Sublessees. Before installing (ii) reach an agreement as to the manner of installation of the Rooftop Equipment. While Landlord agrees to act reasonably and in good faith, Landlord shall not be deemed to be unreasonable if (x) it designates specific areas as suitable for placement of the Rooftop Equipment (it being understood that Landlord needs to take into account conditions for future rooftop installations), or (y) it places any condition(s) on any manner of equipment installation that would adversely affect the proper functioning of the Building systems. Tenant’s rooftop equipment shall be subject to Landlord’s approval, not to be unreasonably withheld, conditioned or delayed, regarding size and the manner of installation, including conformance with Landlord’s reasonable design criteria and any other reasonable requirements. The approved rooftop equipment shall be referred to herein as the “Rooftop Equipment”. Tenant shall ensure that installation of the Rooftop Equipment will not in any way affect the roof warranty or the structural integrity of the roof, and shall require its employees and contractors to exercise the standard of care required by the manufacturer of the roofing materials to prevent voiding roof warranties. In connection with the foregoing, Tenant shall submit to Landlord for its approval (the plans and specifications for the Rooftop Equipment installation, which approval shall not be unreasonably withheld, conditioned or delayed, and shall comply with Landlord’s requirements under Section 6.2.5 of the Lease, in Landlord's sole discretion) all respects, provided, however, Landlord shall not be deemed unreasonable for conditioning its approval of any plans and specifications which (a) specify in detail if the designmanner of installation will not meet, locationat a minimum, size, and, the same standard of care required by the manufacturer of the roofing materials to prevent voiding roof warranties. Tenant shall also have the right to use its proportionate share of common conduit and shaft space in the case of a satellite dishBuilding, frequency of if available, at no charge, to connect the Rooftop Equipment and (b) are sufficiently detailed Premises to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain also pay Landlord all permits necessary for costs of electricity in connection with the maintenance Rooftop Equipment, as reasonably determined by Landlord, such amounts to be included in Expansion Premises Tenant Electric payable by Tenant in accordance with Section 16 hereof and operation Section 4.2.5(b) of the Rooftop Equipment while it is on the Building and operate and Lease. Xxxxxx agrees to maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere good condition and repair throughout the Term. The installation, operation, maintenance, repair and removal of all Rooftop Equipment shall be at Tenant’s sole cost and expense, utilizing contractors approved by Landlord, which may be Landlord’s roofing contractor if required by Landlord, and shall be performed in accordance with all applicable laws and requirements of the Town of Bedford and any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen governmental agencies and public authorities having jurisdiction. (b) Tenant’s use of the Rooftop Equipment Area and the Rooftop Equipment shall not interfere with the use of the roof by other tenants (it being understood that the use of the Rooftop Equipment in the locations shown on a parapet or other screening device acceptable final rooftop plan approved by Landlord shall be deemed to Landlordnot interfere). Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment from the roof upon the expiration or earlier termination of the Lease, including capping off all shafts used in the operation of Tenant’s mechanical equipment, and repair any damage to the roof and/or the Building caused by removal, unless at the time of review of Tenant’s Plans Landlord advised Tenant that the Rooftop Equipment is not required to be removed at the end of the Term. (c) Tenant shall indemnify, defend and hold Landlord harmless from and against any and all liabilities, claims, damages, costs and expenses relating in any way to the Rooftop Equipment, including all wiring related theretodamage to the roof or the Building, unless caused by the negligence or willful misconduct of Landlord, its agents, employees or contractors, or other users of the roof. The foregoing indemnification shall survive the expiration or earlier termination of the Lease. (d) The right to install the Rooftop Equipment is personal to the initial named tenant, Lantheus Medical Imaging, Inc. and may not be assigned or subleased except in connection with a Permitted Transfer under Section 6.2.1(d) of the Lease (or any assignment of the Lease approved by Landlord pursuant to Section 6.2.1 of the Lease). Once installed, within five days after the occurrence Rooftop Equipment may be assigned or subleased only in connection with an assignment of the Lease or a subletting of the Premises. In that event, Tenant shall not be relieved of the primary responsibility for removal of any Rooftop Equipment under the terms of Section 25(b) above. Tenant shall be prohibited from granting any other party any right or license to use any portion of the following events: (1) Rooftop Equipment Area apart from the termination of Tenant's right to possess the Premises;Lease.

Rooftop Equipment. Provided that a. Tenant complies with shall have the terms of ----------------- this Section, Tenant maynon-exclusive right, at its risk Tenant’s sole cost and expense, install to use a portion of the roof of the Building (the "Roof") no larger than one hundred (100) square feet and selected by Landlord in the exercise of Landlord’s reasonable discretion, for the installation of satellite dish dish(es), antenna(e) and related communications equipment the cabling and wiring associated therewith (collectively, the "Rooftop ------- Equipment"), provided that (i) on the roof Rooftop Equipment sought to be installed by Tenant is permitted under, and conforms to the requirements of, the laws, rules and regulations of the State of Maryland, any other governmental or quasi-governmental authorities having jurisdiction over the Building at a location approved by Landlordand any restrictive covenants or other documents governing the use of the Building; (ii) Tenant obtains and maintains all permits, --------- which equipment licenses, variances, authorizations and approvals that may be used solely required in order to install such Rooftop Equipment; (iii) Tenant shall obtain insurance coverages required by Landlord relating to the installation and operation of such Rooftop Equipment; (iv) Tenant shall install any screen or other covering for the Rooftop Equipment that Landlord may reasonably require in order to camouflage or conceal the Rooftop Equipment; (v) Landlord shall have approved in its reasonable discretion the number, dimensions and its Permitted Transferees specifications for the Rooftop Equipment and the proposed method of attaching the Rooftop Equipment to the Roof; and (vi) Landlord's engineer determines that the portion of the Roof on which Tenant desires to install the Rooftop Equipment is capable of bearing the weight of the Rooftop Equipment. b. Prior to or Permitted Sublessees. Before installing contemporaneous with requesting Landlord's approval of the installation of the Rooftop Equipment, Tenant shall submit provide to Landlord for its approval Landlord: (which approval shall be in Landlord's sole discretioni) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;Rooftop

Rooftop Equipment. Provided that Tenant complies with During the terms of ----------------- this SectionTerm, Tenant mayshall be permitted to install, at its risk Maintain and expenserepair supplemental HVAC equipment, install a satellite dish and related antennae, microwave dishes or other state-of-the-art communications equipment and wiring devices (collectively, the "“Rooftop ------- Equipment"”) on the roof of the Building at a location approved by under and subject to the following conditions: (a) Tenant shall comply with all Laws and shall obtain, and deliver to Landlord written evidence of, any approval(s) required under any easements, covenants or restrictions encumbering the Property. (b) Tenant shall obtain Landlord’s prior approval of the location, --------- which equipment may be used solely by Tenant size, design and its Permitted Transferees or Permitted Sublessees. Before installing esthetic appearance of the Rooftop Equipment on the roof of the Building and of the specifications for the Rooftop Equipment, such approval not to be unreasonably withheld, conditioned or delayed. Tenant agrees to consult with Landlord’s roofing contractor prior to installation and strictly to comply with the roofing contractor’s recommendations and requirements. Tenant shall submit to pay all reasonable and actual third-party costs incurred by Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of connection with the Rooftop Equipment including, without limitation, all architectural, engineering and contractors’ fees. The Rooftop Equipment shall be screened from view, at Tenant’s sole cost. Such screening shall be designed by the base building architect and shall be otherwise reasonably acceptable to Landlord. (bc) are sufficiently detailed Tenant shall comply with the provisions of Sections 10, 12 and 13 of this Lease in connection therewith. (d) At least three (3) Business Days prior to allow for installation, Tenant shall notify Landlord of the date and time of the installation. Landlord shall be afforded an opportunity to be present with Tenant at the installation of but Tenant may proceed without Landlord’s representative if Landlord’s representative does not appear at the scheduled time. (e) Tenant shall Maintain the Rooftop Equipment in a safe, good and workmanlike manner orderly condition consistent with industry standards and in accordance with all Laws (the "Legal Requirements")applicable Laws. If Landlord approves of such plansThe installation, Tenant ------------------ shall install (in a good maintenance, repair and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation removal of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment shall be performed at Tenant’s sole expense in such a manner so as which will not to unreasonably interfere with impair the integrity of, damage or adversely affect the warranty applicable to, the roof or any other satelliteportion of the Property. If Tenant voids, antennae, or other transmission facility on the Building's roof in whole or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. part, and roof warranty, Tenant shall maintain be solely responsible for all costs associated therewith. (f) No later than the expiration or sooner termination of the Term, at Tenant’s sole expense, Tenant shall remove the Rooftop Equipment and screening device repair any resulting damage. (g) No person shall have access to the roof without Landlord’s permission, except as expressly set forth in good repair and conditionthis Section 35. Tenant shall, at its risk and expense, remove Tenant’s indemnification of Landlord pursuant to Section 8(e) of this Lease also applies to the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence and Tenant’s use of any portion of the following events: Premises therefor. Without limiting the foregoing, Tenant solely shall be responsible (1except to the extent caused by the gross negligence or willful misconduct of Landlord or its contractors) for any damages or injury caused by or in any way relating to the termination Rooftop Equipment, including, but not limited to, damage or injury caused by reason of Tenant's right to possess the Premises;Rooftop Equipment collapsing or being blown from the roof or any other portion of the Property.

Rooftop Equipment. Provided that A. Tenant complies with shall have the terms non-exclusive right to use a portion of ----------------- this Sectionthe roof of the Building, Tenant maywhich shall be designated by Landlord, at its risk and expense, install for the installation of a satellite dish or antenna, and related communications other mechanical equipment and wiring (collectively, the "“Rooftop ------- Equipment”) for use in connection with Tenant’s business in the Leased Premises, provided that (i) the Rooftop Equipment is permitted under the applicable laws, rules and regulations of the Federal Communications Commission, the Federal Aviation Administration, the Commonwealth of Massachusetts and any other governmental and quasi-governmental authorities having jurisdiction over the Building or Landlord, (ii) the Rooftop Equipment conforms to all such applicable laws, rules and regulations, (iii) Tenant has obtained all permits, licenses, variances, authorizations and approvals that may be required in order to install such Rooftop Equipment and any insurance required by Landlord, (iv) each satellite dish or antenna is not more than twenty inches (20") in diameter and mounted so the topmost part is not more than thirty-six inches (36") in height, (v) the Rooftop Equipment is not more than the weight that Landlord shall determine is appropriate for the roof (which Landlord shall specify to Tenant upon Tenant's written request), (vi) Tenant installs any screen or other covering for the Rooftop Equipment that Landlord may require (the size, type and style of which shall be subject to Landlord's prior written approval) in order to camouflage or conceal the Rooftop Equipment, (vii) Tenant shall pay Landlord (within thirty (30) days after receipt of an invoice therefor) an amount equal to all costs incurred by Landlord to have an engineer review the plans and specifications for the Rooftop Equipment, the location specifications for the Rooftop Equipment and the plans, specifications and method for attaching the Rooftop Equipment to the Building, and (viii) the Rooftop Equipment do not adversely affect any antenna or other equipment that is on the roof of the Building at a Building. In addition, the style, color, materials, exact location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case method of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If must be approved by Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike mannerits sole discretion), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good condition and repair and condition. in compliance with all applicable laws, rules, regulations and requirements. B. Prior to or contemporaneously with requesting Landlord’s approval of the installation of the Rooftop Equipment, Tenant shall, at its risk shall provide to Landlord plans and expense, remove specifications for the Rooftop Equipment (including all wiring related theretosize, location, height, weight and color) and plans and specifications for the installation thereof (the “Rooftop Equipment Plans”), within five days after the occurrence of any . Prior to installation of the following eventsRooftop Equipment, Tenant shall provide to Landlord: (i) copies of all required governmental and quasi-governmental permits, licenses, special zoning variances, and authorizations, all of which Tenant shall obtain at its own cost and expense; and (ii) a policy or certificate of insurance evidencing such insurance coverage as may be required by Landlord for the installation, operation and maintenance of the Rooftop Equipment and sufficient to cover, among other things, the indemnities from Tenant to Landlord provided in the Lease. Landlord may withhold its approval of the installation of the Rooftop Equipment if the installation, operation or removal of the Rooftop Equipment may (1) damage the structural integrity of the Building or void any warranty or guaranty applicable to the roof or any portion of the Building, (2) materially interfere with any service provided by Landlord to the Building or any tenant or occupant thereof, (3) materially interfere with the use of any part of the Building by any tenant or occupant in the Building, or (4) cause the violation of any zoning ordinance or other governmental or quasi-governmental law, rule or regulation applicable to the Building. Tenant shall not be entitled to rely on any such approval as being a representation by Landlord that such installation and operation is permitted by or in accordance with any zoning ordinance or other governmental or quasi-governmental law, rule or regulation applicable to the Building. Landlord, at its sole option and discretion, may require Tenant, at any time prior to the expiration of this Lease, to terminate the operation of the Rooftop Equipment if it is causing physical damage to the structural integrity of the Building or voids any warranty or guaranty applicable to the roof or the Building, materially interferes with any other service provided by the Building, materially interferes with any other tenant's business, or causes the violation of any condition or provision of this Lease or any governmental or quasi-governmental law, rule or regulation applicable to the Building (now or hereafter in effect). If, however, Tenant can correct the damage or prevent said interference caused by the Rooftop Equipment to Landlord's satisfaction within thirty (30) days, Tenant may restore its operation so long as Tenant promptly commences to cure such damage and diligently pursues such cure to completion. If the Rooftop Equipment is not completely corrected and restored to operation within thirty (30) days, Landlord, at its sole option, may require that the Rooftop Equipment be removed at Tenant's expense. If Landlord or any other tenant in the Building shall require that the Rooftop Equipment be moved to another location on the roof, either to accommodate Landlord or to provide other tenants or occupants in the Building with access to the roof for placement of other antennas, other electrical equipment or other reasonably Landlord-approved uses or installations or to avoid interference with future business or uses of any space in the Building, Landlord shall have the right, at its sole expense, to relocate the Rooftop Equipment to another place on the roof, provided that such new location does not materially adversely affect the operation of such Rooftop Equipment. Landlord shall use reasonable efforts to minimize any interference with Tenant’s conduct of its business in connection with any such relocation. If other Landlord-approved rooftop equipment is materially interfering with the use of Tenant’s Rooftop Equipment, Landlord shall use reasonable efforts to relocate Tenant’s Rooftop Equipment or the rooftop equipment of another tenant to another location on the roof. At the expiration or earlier termination of the Term or upon termination of the operation of the Rooftop Equipment, at Tenant’s sole cost, the Rooftop Equipment and all cabling and other equipment relating thereto shall be removed from the Building and the area where the Rooftop Equipment was located shall be restored to its condition existing prior to such installation, in a manner and with materials reasonably determined by Landlord. Tenant hereby authorizes Landlord to remove and dispose of the Rooftop Equipment and charge Tenant for all costs and expenses incurred by Landlord in connection therewith if Tenant has not done so on or before the expiration or earlier termination of the Term of this Lease. Tenant agrees that Landlord shall not be liable for any property disposed of or removed by Landlord. Tenant's right obligation to possess perform and observe this covenant shall survive the Premises;expiration or earlier termination of the term of this Lease. C. Tenant covenants and agrees that the installation, operation and removal of the Rooftop Equipment will be at its sole risk. Tenant covenants and agrees absolutely and unconditionally to indemnify, defend and hold Landlord harmless from and against all claims, actions, damages, liability, judgments, settlements, costs and expenses (including reasonable attorney's fees and expenses) in connection with the loss of life, personal or bodily injury, damage to property or business or any other loss or injury to the extent arising out of the installation, operation, maintenance or removal of the Rooftop Equipment, including without limitation, any loss or injury resulting from transmissions from the Rooftop Equipment.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its Tenant's risk and expenseexpense and to be used solely by Tenant, install a satellite dish and related communications equipment and wiring style antennae of no more than five (collectively, 5) feet in diameter (the "Rooftop ------- EquipmentROOFTOP EQUIPMENT") on the roof of the Building at a location approved by Landlord, --------- which equipment may . The Rooftop Equipment shall be used solely only by Tenant and its Permitted Transferees or Permitted SublesseesTenant. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall not be in Landlord's sole discretionunreasonably withheld, conditioned or delayed to the extent such plans and specifications do not reflect alterations which affect the exterior or 38 structure of the Building or its HVAC, plumbing or mechanical systems or its base building electrical system) plans and specifications which (aA) specify in detail the design, location, size, and, in the case of a satellite dish, frequency location and size of the Rooftop Equipment (and, with respect to the Rooftop Equipment, such specifications shall also contain the frequency of such equipment) and (bB) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws laws, regulations, restrictions (governmental or otherwise) and architectural guidelines in effect for the area in which the Building is located as they may be amended from time to time (the "Legal RequirementsLEGAL REQUIREMENTS"). None of the Rooftop Equipment shall protrude more than five (5) feet above the elevation of the roof on which it is installed and all such equipment must be painted in a color reasonably acceptable to Landlord to minimize visibility. If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any equipment (including any other satellite, antennae, or other transmission facility facility) on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device reasonably acceptable to Landlord. All electrical usage for the Rooftop Equipment shall be separately metered or, at Landlord's election, shall be placed on the same electrical meter as the Premises. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Landlord may relocate the Rooftop Equipment to another location on the roof of the Building at its sole cost and expense upon prior written notice to Tenant so long as the new location does not materially interfere with Tenant's reception received by the satellite or antennae, unless said relocation is requested because the Rooftop Equipment is unreasonably interfering with other equipment on the Building's roof or in the Building (in which case Tenant shall pay for the cost of such relocation). Upon Landlord's written request (but not otherwise), Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five (5) days after the occurrence of any of the following events: (1i) the termination of Tenant's right to possess the Premises;; (ii) the termination of the Lease; (iii) the expiration of the Term; or (iv) the Premises shall be vacated by Tenant and any and all assignees and/or sublessees approved by Landlord hereunder. If Tenant fails to do so, Landlord may remove all or any part of the Rooftop Equipment and store or dispose of it in any manner Landlord deems appropriate without liability to Tenant; Tenant shall reimburse Landlord for all costs incurred by Landlord in connection therewith within ten (10) days after Landlord's request therefor. Tenant shall repair any damage to the Building caused by or relating to the Rooftop Equipment, including that which is caused by its installation, maintenance, use, or removal and shall indemnify Landlord against all liabilities, losses, damages, and costs arising from the installation, maintenance, use, or removal of the Rooftop Equipment (UNLESS THE LIABILITIES, LOSSES, DAMAGES, AND COSTS IN QUESTION WERE CAUSED BY LANDLORD'S SOLE OR GROSS NEGLIGENCE OR WILFUL MISCONDUCT). All work relating to the Rooftop Equipment shall, at Tenant's 39 expense, be coordinated with Landlord's roofing contractor so as not to affect any warranty for the Building's roof and shall not penetrate the roof.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its risk and expensesole cost, install a satellite dish and related communications ----------------- telecommunications equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at a location approved by LandlordBuilding, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit subject to Landlord for its approval (which approval shall be in Landlord's sole discretion) prior written approval, not to be unreasonably withheld, conditioned or delayed, of plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of for the Rooftop Equipment and (b) are sufficiently detailed to allow the type and placement of all cabling and wiring ancillary thereto. Tenant shall be responsible for the installation paying all reasonable out-of-pocket, third party costs associated with Landlord's review of such plans and specifications for the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"if any). If Landlord approves of such plans, shall not charge Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required additional rent for the installation and operation thereof; copies use of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install space on the roof for the Rooftop Equipment. Tenant shall thereafter maintain be responsible for obtaining and maintaining all approvals, permits necessary and licenses required by Fairfax County, Reston or any federal, state or local government for the maintenance installation and operation of the Rooftop Equipment while it is on the Building and operate and maintain shall pay all fees attendant thereto. If the Rooftop Equipment in such a manner so as not is installed, Tenant shall have sole responsibility for the maintenance, repair and replacement thereof and of all cabling and wiring ancillary thereto and Tenant will be responsible for bearing the costs to unreasonably interfere with repair any other satellite, antennae, or other transmission facility on damage caused to the Building's roof or in Building by the Building. Landlord may require that Tenant screen installation of the Rooftop Equipment with a parapet Equipment. At the expiration or other screening device acceptable to Landlord. earlier termination of this Lease, Tenant shall maintain remove the Rooftop Equipment and screening device all cabling and wiring ancillary thereto and shall be responsible to repair any damage caused to the roof or Building in good repair connection with such removal. Notwithstanding the foregoing, Tenant covenants and condition. agrees that: (a) The Rooftop Equipment shall not unreasonably interfere with the standard use of the building by other tenants; (b) Tenant shall, at its risk and expense, remove shall pay any increase in Landlord's insurance rates occasioned by the installation or operation of the Rooftop Equipment; (c) Tenant shall fully insure against damage occasioned by the installation and/or operation of the Rooftop Equipment (including all wiring related thereto), within five days after subject to the occurrence provisions of any sections 12.1 and 18.2 of the following events: Lease); (1d) Landlord shall retain the termination of Tenant's right to possess designate the Premises;placement of the Rooftop Equipment and to require such reasonable "screening" type improvements to the building as may be required to maintain its cosmetic appearance; and (e) If Tenant accesses the roof without a designated representative of Landlord, the burden of proof for any damages subsequent to such access shall be upon Tenant.

Rooftop Equipment. Provided that If Tenant complies with desires to use the terms roof of ----------------- this Sectionthe 26642 Building and/or the 26672 Building to install communication and/or supplemental HVAC equipment to be used from the Premises, Tenant maymay so notify Landlord in writing (“Rooftop Equipment Notice”), which Rooftop Equipment Notice shall generally describe the specifications for the equipment desired by Tenant. If at its risk and expensethe time of Landlord’s receipt of the Rooftop Equipment Notice, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") Landlord reasonably determines that space is available on the roof of the Building at a location applicable building for such equipment, then subject to all governmental laws, rules and regulations, Tenant and Tenant’s contractors (which shall first be reasonably approved by Landlord) shall have the right and access to install, --------- which repair, replace, remove, operate and maintain (i) supplemental HVAC equipment required for Tenant’s Supplemental Units (“Rooftop HVAC Equipment”) and/or (ii) one (1) so-called “satellite dish” or other similar device, such as antennae on either the 26642 Building or the 26672 Building, or both (collectively, “Communication Equipment”) no greater than one (1) meter in diameter, together with aesthetic screening designated by Landlord and all cable, wiring, conduits and related equipment, for the purpose of receiving and sending radio, television, computer, telephone or other communication signals, at locations on the roof of the applicable building designated by Landlord. The Rooftop HVAC Equipment and the Communication Equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing collectively referred to herein as the “Rooftop Equipment, ”. Landlord shall have the right to require Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of relocate the Rooftop Equipment and (b) are sufficiently detailed at any time to allow for another location on the installation roof of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (applicable building reasonably approved by Tenant, provided that the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ cost thereof shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipmentborne by Landlord. Tenant shall thereafter maintain all permits retain Landlord’s designated roofing contractor to make any necessary for penetrations and associated repairs to the maintenance roof in order to preserve Landlord’s roof warranty. Tenant’s installation and operation of the Rooftop Equipment while it is on shall be governed by the Building following terms and conditions: (A) Tenant’s right to install, replace, repair, remove, operate and maintain the Rooftop Equipment in shall be subject to all governmental laws, rules and regulations and covenants, conditions and restrictions and Landlord makes no representation that such a manner covenants, conditions and restrictions and laws, rules and regulations permit such installation and operation. (B) All plans and specifications for the Rooftop Equipment shall be subject to Landlord’s reasonable approval. (C) All costs of installation, operation and maintenance of the Rooftop Equipment and any necessary related equipment (including, without limitation, costs of obtaining any necessary permits and connections to the Project’s electrical system) shall be borne by Tenant. (D) It is expressly understood that Landlord retains the right to use the roof of the Project for any purpose whatsoever provided that Landlord shall not unreasonably interfere with Tenant’s use of the Rooftop Equipment. (E) Tenant shall use the Rooftop Equipment so as not to unreasonably interfere with cause any interference to the non-communication equipment operations of other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that tenants within their premises. (F) Tenant screen shall use the Rooftop Equipment so as not to cause any interference with a parapet any Communication Equipment which may exist prior to installation of Tenant’s Rooftop Equipment. (G) Landlord shall not have any obligations with respect to the Rooftop Equipment. Landlord makes no representation that the Communication Equipment will be able to receive or other screening device acceptable transmit communication signals without interference or disturbance (whether or not by reason of the existing installations or use of similar equipment by others on the roof of the Project) and Tenant agrees that Landlord shall not be liable to LandlordTenant therefor. Tenant shall maintain not lease or otherwise make the Communication Equipment available to any third party and the Communication Equipment shall be only for Tenant’s use in connection with the conduct of Tenant’s business in the Premises. (H) Tenant shall (i) be solely responsible for any damage caused as a result of the Rooftop Equipment, (ii) promptly pay any tax, license or permit fees charged pursuant to any laws or regulations in connection with the installation, maintenance or use of the Rooftop Equipment and screening device in good repair comply with all precautions and conditionsafeguards recommended by all governmental authorities, and (iii) pay for all necessary repairs, replacements to or maintenance of the Rooftop Equipment. (I) The Rooftop Equipment shall remain the sole property of Tenant. At Landlord’s election, Tenant shall, at its risk and expense, shall remove the Rooftop Equipment and related equipment at Tenant’s sole cost and expense upon the expiration or sooner termination of this Lease or upon the imposition of any governmental law or regulation which may require removal, and shall repair the Project upon such removal to the extent required by such work of removal. If Tenant fails to remove the Rooftop Equipment and repair the Project within fifteen (including all wiring related thereto), within five 15) days after the occurrence expiration or earlier termination of any this Lease, Landlord may do so at Tenant’s expense. The provisions of this Section 12(c)(I) shall survive the expiration or earlier termination of this Lease. (J) The Rooftop Equipment shall be deemed to constitute a portion of the following events: Premises for purposes of Articles 13 and 14 of this Lease. (1K) Upon request from Landlord, Tenant agrees to execute a license agreement with Landlord or Landlord’s rooftop management company regarding Tenant’s installation, use and operation of the termination Rooftop Equipment, which license agreement shall be in commercially reasonable form and shall incorporate the terms and conditions of Tenant's right to possess the Premises;this Section 12(c).

Rooftop Equipment. Provided that a. During the Term of this Lease, and subject to the terms and conditions of this Section 31, (i) Tenant complies shall have the exclusive right, at no additional rental charge, to use the back-up power generator located on the roof identified as Generac, Model 9486930200, Serial Number 2097053 (but such right shall not apply to the life safety generator identified as Generac, Model 8223990400, Serial Number 2093576) and to connect its data center and other systems serving the Premises to such back-up power generator, (ii) Tenant shall have the exclusive right, at no additional rental charge, to use up to the full capacity of the HVAC system and related components (including the HVAC system pumps) on the roof or running to or from the roof for the purposes of regulating the temperature of its data center and other areas of the Premises, and (iii) Tenant shall have the non-exclusive right, at no additional charge, to use the antenna systems located on the roof and connect its Tenant Lines and Systems serving the Premises to same. In the event Tenant increases its use of the capacity of the HVAC system referenced in clause (ii) above, Tenant shall be permitted to take such actions (including making adjustments to the HVAC system or adding fluids thereto) as are necessary to do so, and Landlord shall reasonably cooperate with Tenant in connection therewith, all of the foregoing at the sole cost and expense of Tenant. Landlord hereby grants to Tenant the right to access all wiring, systems, switches, lines, pipes and related components which run to and from items (i), (ii) and (iii) in the first sentence of this paragraph, including accessing any wiring closets, building risers, electrical closets, control rooms or mechanical engineering closets where such wiring, systems, switches, lines, pipes and related components may be housed, whether or not they are located in Common Areas or elsewhere, and Tenant shall have the right to repair, upgrade or replace such wiring, systems, switches, lines, pipes and related components throughout the Term. As regards items (i), (ii) and (iii) referenced in the first sentence of this paragraph, Landlord shall maintain, restore and replace (as necessary) such equipment in order to keep it in good and operational condition and repair, subject to ordinary wear and tear, throughout the Term of this Lease as part of its Landlord Maintenance Obligation hereunder; provided, however, Tenant shall, for purposes of clarity, maintain its rights under Section 9.j. with respect thereto. Tenant shall also have the right to, from time to time, inspect any of the aforementioned rooftop equipment. Landlord cannot remove the above-described equipment from the roof without Tenant’s prior consent, which Tenant may withhold in its reasonable discretion (unless, as to the item referenced in clause (iii) only, such equipment is being replaced with equipment of comparable or better quality, in which event no consent shall be required). As to all of the foregoing items, Tenant shall have no obligation to, and shall not, remove such items at the end of the Term and Tenant shall have no obligation to restore the related areas to their condition existing as of the Commencement Date. Tenant shall have the further non-exclusive right, at no additional rental charge, to use and install on the roof additional equipment, which may include (without limitation) satellite dishes or additional antennas with the terms of ----------------- this Sectionconduit extending from such dish and/or antenna to the Premises or additional back-up power generators with power lines running into, Tenant mayand serving exclusively, at its risk and expense, install a satellite dish and related communications equipment and wiring the Premises (collectively, the "“Tenant’s Rooftop ------- Equipment"”). Tenant’s installation of the Tenant’s Rooftop Equipment shall meet the following standards: (i) the installation and operation of the Tenant’s Rooftop Equipment must be permitted under, and conform to, all Legal Requirements and (ii) Landlord shall have approved in its reasonable discretion all structural, mechanical and electrical details of the Tenant’s Rooftop Equipment, including without limitation, the proposed method of attaching the Tenant’s Rooftop Equipment to the roof. Tenant shall be entitled to connect the Tenant’s Rooftop Equipment to the Project’s electric power source; provided, however, that such connection shall be undertaken by licensed contractor(s) approved by Landlord (such approval not to be unreasonably withheld, conditioned or delayed). The cost of the Tenant’s Rooftop Equipment and its installation, the cost of connecting the Tenant’s Rooftop Equipment to the Project’s electric power source and the cost of all electricity consumed by the Tenant’s Rooftop Equipment shall be paid by Tenant, as well as the cost of repairing any damage resulting from such installation or connection. b. Prior to or contemporaneous with requesting Landlord’s approval of the installation of the Tenant’s Rooftop Equipment, Tenant shall provide to Landlord: (i) plans and specifications for the Tenant’s Rooftop Equipment; and (ii) copies of all required governmental and quasi-governmental permits, licenses, special zoning variances, and authorizations for the installation and operation of the Tenant’s Rooftop Equipment, all of which Tenant shall obtain at its own cost and expense. Landlord may withhold its approval of the installation of the Tenant’s Rooftop Equipment if the installation, operation or removal of the Tenant’s Rooftop Equipment may (A) interfere with and/or materially and adversely affect the structure of the Project or any of the Base Building Elements, and/or impair or void any warranty or guaranty applicable to the Project (unless Tenant provides a substitute or replacement warranty or guaranty); (B) cause the violation of any Legal Requirement; or (C) materially diminish the usefulness of the roof deck and/or (landscaped) terrace. Landlord may require as a precondition to its approval of the installation of the Tenant’s Rooftop Equipment that Tenant (or, at Landlord’s option, Landlord) install a walkway and/or additional structural support, in a manner reasonably determined by Landlord’s engineer in its sole discretion, to the portion of the Roof on which Tenant desires to install the Tenant’s Rooftop Equipment. c. Tenant shall maintain the Tenant’s Rooftop Equipment in good condition and repair throughout the Term of this Lease at its cost and expense. d. Landlord may require Tenant, at any time prior to the expiration of this Lease, to terminate the operation of the Tenant’s Rooftop Equipment if any such equipment (i) interferes with and/or materially and adversely affects the structure of the Project or any of the base Building systems, and/or threatens to impair or void any warranty or guaranty applicable to the Project, or (ii) causes the violation of any Legal Requirement; subject, however, to Tenant’s reasonable right to cure the condition that is the cause of Landlord’s invocation of either of clauses (i) or (ii) above. e. Subject to the rights of Tenant under this Section 31, Landlord may grant rooftop equipment installation rights to or the right to use Landlord’s existing antenna systems on the roof to any other tenant of the Building. Landlord shall not permit the roof to be used by any person other than Landlord, Tenant or other tenants of the Building (i.e., no third party licensees shall be permitted) other than any such use that may be conducted as of the Execution Date and thereafter by the Xxxxxx Xxxxx University Instructional Foundation. f. The Tenant’s Rooftop Equipment shall be the property of Tenant, and Tenant may remove such Tenant’s Rooftop Equipment, or any portion thereof, from the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees any time during the Term. At the expiration or Permitted Sublessees. Before installing the Rooftop Equipmentearlier termination of this Lease, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the remove Tenant’s Rooftop Equipment and (b) are sufficiently detailed shall repair any damage resulting from such removal. Notwithstanding the foregoing, Tenant shall not be obligated to allow for the installation remove any generators that form a part of the Tenant’s Rooftop Equipment in a good or any Tenant Lines and workmanlike manner and Systems that may run from or extend to the roof. Tenant may add additional Tenant’s Rooftop Equipment or repair or replace existing Tenant’s Rooftop Equipment so long as the same is undertaken in accordance with all Laws (this Section 31. g. In no event shall Landlord’s approval of the "Legal Requirements"). If Landlord approves installation or operation of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Tenant’s Rooftop Equipment constitute any representation or warranty by Landlord that such installation and operation is in accordance compliance with all Legal Requirements or any warranty or guaranty applicable to the roof of the Project. Landlord expressly makes no representations or warranties with respect to the suitability or fitness of the roof for the Tenant’s Rooftop Equipment or Legal Requirements associated with the installation or operation of the Tenant’s Rooftop Equipment. h. Tenant covenants and agrees that the installation, operation, maintenance and removal of the Tenant’s Rooftop Equipment shall obtain all consents be at Tenant’s sole risk, cost and permits required for expense, and Landlord assumes no liability or responsibility whatsoever with respect to the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Tenant’s Rooftop Equipment. Landlord grants to Tenant such access rights as Tenant shall thereafter need in order to install, repair, maintain or replace Tenant’s Rooftop Equipment, including the right to access all permits necessary for the maintenance wiring, systems, switches, lines, pipes and operation of the related components which run to and from Tenant’s Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennaeEquipment, or other transmission facility on the Building's roof any wiring closets, building risers, electrical closets, control rooms or in the Building. Landlord mechanical engineering closets where such wiring, systems, switches, lines, pipes and related components may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;be housed.

Rooftop Equipment. Provided that Tenant complies with Subject to the terms of ----------------- this SectionSection 16.29, Tenant mayshall have the right to install, at its risk operate, maintain, repair and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") replace on the roof of the Building at Office Area a location satellite dish or antenna, and air conditioning equipment required for its operations in the Premises, together with access to use of available Office Area shafts, conduits and risers to connect to such equipment (collectively, the “Rooftop Equipment”). There shall be no additional charges or fees payable by Tenant in connection therewith. Tenant shall not install any Rooftop Equipment until Landlord shall have approved the size, location, weight and manner of attachment thereof, such approval not to be unreasonably withheld, conditioned or delayed. Tenant’s rights under this Section 16.29 shall be subject to all of the terms and conditions of this Lease, as well as the following additional conditions: (1) Tenant shall be solely and exclusively responsible for all costs, expenses and charges, of every kind, of installing, operating, maintaining, repairing, replacing, and removing the Rooftop Equipment and, except to the extent resulting from the negligence or willful misconduct of Landlord, Landlord shall have no liability or obligation in connection therewith. Tenant shall enter into a service contract with a contractor reasonably approved by Landlord for the installation, operation, maintenance, repair, replacement and removal of the Rooftop Equipment, which contract shall be subject to Landlord’s reasonable approval. (2) If, in the reasonable judgment of Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees any electrical, electromagnetic, radio frequency or Permitted Sublessees. Before installing other material interference shall result from the operation of any of the Rooftop Equipment, Tenant shall submit upon Landlord’s request shut down Tenant’s equipment upon twenty-four (24) hours prior notice to Tenant, which notice may be electronic if given to Xx. Xxxxxxxx Xxxxxxxxxxx at xxxxxxxxxxxx@xxxxxxx.xxx or such other person as designed by Tenant in writing from time to time; provided, however, if an emergency situation exists, which Landlord for reasonably determines in its approval (which approval good faith discretion to be attributable to the Rooftop Equipment, Landlord shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail immediately notify Tenant verbally, who shall act immediately to remedy the designemergency situation. Should Tenant fail to so remedy said emergency situation, location, size, and, in the case of a satellite dish, frequency Landlord may then act to shut down Tenant’s equipment. Tenant agrees to cease operations of the Rooftop Equipment (except for intermittent testing on a schedule approved by Landlord) until the interference has been corrected to the reasonable satisfaction of Landlord. If such interference is caused by telecommunications equipment and has not been corrected to the reasonable satisfaction of Landlord within thirty (b30) are sufficiently detailed to allow for days, Landlord may require that Tenant immediately remove from the installation Roof the specific item of telecommunications equipment causing such interference. (3) Tenant shall, at its sole cost and expense, and at its sole risk, install, operate and maintain the Rooftop Equipment in a good and workmanlike manner manner, and in accordance compliance with all Laws electric, communication, and safety codes, ordinances, standards, regulations and requirements, now in effect or hereafter promulgated, of the Federal Government, including, without limitation, the Federal Communications Commission (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner“FCC”), maintain the Federal Aviation Administration (“FAA”) or any successor agency of either the FCC or FAA having jurisdiction over radio or telecommunications, and use of the state, city and county in which the Office Area is located. Tenant shall reasonably cooperate generally with Landlord and other carriers to permit the Office Area’s rooftop to be and remain in compliance with all FCC and OSHA rules and regulations relating to radio frequency emission levels and maximum permissible exposure. Except to the extent resulting from Landlord’s negligence or willful misconduct, neither Landlord nor its agents shall be liable to Tenant for any stoppages or shortages of electrical power furnished to the Rooftop Equipment in accordance with all Legal Requirements or the roof area because of any act, omission or requirement of the public utility serving the Office Area, or the act or omission of any other tenant, invitee or licensee or their respective agents, employees or contractors, or for any other cause beyond the reasonable control of Landlord, and Tenant shall obtain all consents and permits required not be entitled to any rental abatement for any such stoppage or shortage of electrical power. Neither Landlord nor its agents shall have any responsibility or liability for the installation conduct or safety of any of Tenant’s representatives, repair, maintenance and operation thereof; copies engineering personnel while in or on any part of the Office Area or the roof area. (4) Tenant shall be responsible for connecting the Rooftop Equipment to the Office Area’s utility systems and for the costs and expenses of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install electricity consumed in connection with the Rooftop Equipment. . (5) Tenant shall thereafter maintain all permits necessary not make any changes, alterations, or other improvements on or to the roof of the Office Area without Landlord’s prior written consent in each instance, which consent, Landlord may withhold at its discretion; provided, however, in connection with the installation, operation, maintenance, repair or replacement of the Rooftop Equipment, Landlord’s consent shall not be unreasonably withheld, conditioned or delayed. (6) Tenant shall have no right of access to the roof of the Office Area unless Tenant has given Landlord reasonable advance notice and unless Tenant’s representatives are accompanied by a representative of Landlord. Landlord will make a representative available to Tenant (i) during Normal Business Hours upon reasonable advance notice and (ii) during emergencies, as soon as practicable (taking into account the circumstances) after receipt of a request from Tenant. (7) At the expiration or prior termination of this Lease, Tenant shall remove the Rooftop Equipment from the roof of the Office Area, and Tenant shall be responsible for the maintenance and operation cost of repairing any damage to the roof of the Office Area caused by the installation or removal of the Rooftop Equipment while it is on or the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. exercise of Tenant’s rights under this Section 16.29. (8) Tenant shall maintain have no right to transfer or assign its rights under this Section 16.29, other than to a permitted assignee or sublessee of all or substantially all of the Premises. (9) To the maximum extent permitted by law, the Rooftop Equipment and screening device all other related installations shall be at the sole risk of Tenant, and except to the extent caused by negligent acts or willful misconduct by Landlord or its agents, employees or contractors, Landlord shall have no liability to Tenant in good repair the event that the Rooftop Equipment or any related installations are damaged for any reason. (10) Tenant shall comply with all Legal Requirement and conditionInsurance Requirements in connection with Tenant’s exercise of its rights pursuant to this Section 16.29. Landlord shall have the right not more than two (2) times during the Original Term and one (1) time during each Extension Term, if any, upon thirty (30) days’ notice to Tenant, to require Tenant to relocate the Rooftop Equipment to another area on the roof of the Office Area equally suitable for Tenant’s use. In such event, Tenant shall on or before the thirtieth (30th) day after Landlord gives such notice, relocate the Rooftop Equipment and Landlord shall reimburse Tenant for all reasonable costs and expenses incurred by Tenant in connection with said relocation and any resulting relocation of utility lines. In addition to the indemnification provisions set forth in this Lease (which indemnification provisions shall be applicable to the use by Tenant of the Rooftop Equipment), except to the extent resulting from the negligence or willful misconduct of Landlord or its agents, employees or contractors, Tenant shall, at its risk to the maximum extent permitted by law, indemnify, defend, and expensehold Landlord harmless from any and all claims, remove losses, demands, actions or causes of actions suffered by any person, firm, corporation, or other entity to the extent that the same arises out of or results from Tenant’s use of the Rooftop Equipment (including all wiring related thereto), within five days after and the occurrence of any of rights granted to Tenant and the following events: (1) the termination performance of Tenant's right to possess the Premises;’s obligations under this Section 16.29.

Rooftop Equipment. Provided that If Tenant complies with desires to use the terms roof of ----------------- this Sectionthe Building to install communication equipment to be used from the Premises, Tenant maymay so notify Landlord in writing (“Communication Equipment Notice”), which Communication Equipment Notice shall generally describe the specifications for the equipment desired by Tenant. If at the time of Landlord’s receipt of the Communication Equipment Notice, Landlord reasonably determines that space is available on the roof of the Building for such equipment, then Tenant, at its risk sole cost and expense, install shall have the non-exclusive right (it being understood that Landlord may grant, extend or renew similar rights to others) to install, maintain, and from time to time replace a satellite dish or antenna and related communications infrastructure and equipment and wiring (collectively, the "Rooftop ------- “Communication Equipment"”) on the roof of the Building at a location approved by LandlordBuilding, --------- which equipment may be used solely by Tenant and its Permitted Transferees provided that prior to commencing any installation or Permitted Sublessees. Before installing the Rooftop Equipmentmaintenance, Tenant shall submit (i) obtain Landlord’s prior written approval of the proposed size, weight and location of the Communication Equipment, the method for fastening the Communication Equipment to the roof, and any architectural screening as may be appropriate, which approval(s) may be granted or withheld in Landlord’s sole but good faith determination, (ii) such installation and/or replacement shall comply strictly with all applicable governmental laws, rules and regulations and the conditions of any bond or warranty maintained by Landlord on the roof, (iii) use the Communication Equipment solely for its approval personal internal use, (which approval shall be in Landlord's sole discretioniv) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency not grant any right to use of the Rooftop Communication Equipment to any other party, and (bv) are sufficiently detailed obtain, at Tenant’s sole cost and expense, any necessary federal, state, and municipal permits, licenses and approvals, and deliver copies thereof to allow for Landlord. Landlord may supervise or perform any roof penetration related to the installation of any Communication Equipment, and Landlord may charge the Rooftop Equipment cost thereof to Tenant. Tenant agrees that all installation, construction and maintenance shall be performed in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plansneat, Tenant ------------------ shall install (in a good responsible, and workmanlike manner), maintain and use the Rooftop Equipment in accordance using generally acceptable construction standards, consistent with all Legal Requirements and such reasonable requirements as shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to imposed by Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk sole cost and expense, repair any damage to the Building caused by Tenant’s installation. maintenance, replacement, use or removal of the Communication Equipment. The Communication Equipment shall remain the property of Tenant, and Tenant may remove the Rooftop Communication Equipment (including all wiring related at its sole cost and expense at any time during the Term. Tenant shall remove the Communication Equipment at Tenant’s sole cost and expense on or prior to the Termination Date. Tenant agrees that the Communication Equipment, and any wires, cables or connections relating thereto), within five days after and the occurrence of any installation, maintenance and operation thereof shall in no way interfere with the use and enjoyment of the following events: Building, or the operation of communications (1including, without limitation, other satellite antenna) or computer devices by Landlord or by other tenants or occupants of the termination Project or surrounding buildings. If such interference shall occur, Landlord shall give Tenant written notice thereof and Tenant shall correct the same within two (2) business days of receipt of such notice. Landlord makes no warranty or representation that the Building or any portions thereof are suitable for the use of a Communication Equipment, it being assumed that Tenant has satisfied itself thereof. Tenant shall protect, defend, indemnify and hold harmless the Indemnitees from and against claims, damages, liabilities, costs and expenses of every kind and nature, including attorneys’ fees, incurred by or asserted against Landlord arising out of Tenant's right to possess ’s installation, maintenance, replacement, use or removal of the Premises;Communication Equipment.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant maymay install, at its Tenant's risk and expenseexpense and to be used solely by Tenant, install an array of antennas (not to exceed forty (40) antennas without Landlord's prior written consent, which consent shall not be unreasonably withheld or delayed), including GPS receivers, omni antennas, and a satellite dish and related communications equipment and wiring style antennae, none of which shall be more than six (collectively, 6) feet in diameter (the "Rooftop ------- EquipmentROOFTOP EQUIPMENT") on the roof or the upper edge of the rear of the Building at a location approved by Landlord, --------- which equipment may . The Rooftop Equipment shall be used solely only by Tenant and its Permitted Transferees or Permitted SublesseesTenant. Before installing the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (aA) specify in detail the design, location, size, and, in the case of a satellite dish, frequency location and size of the Rooftop Equipment and (bB) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws Laws. None of the Rooftop Equipment shall protrude more than five (5) feet above the "Legal Requirements")elevation of the roof on which it is installed and all such equipment to the extent reasonably practicable must be painted in a color reasonably acceptable to Landlord to minimize visibility. If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with all Legal Requirements Laws and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any equipment (including any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;transmission

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant mayright, at its Tenant’s sole risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") to erect an antenna on the roof of the Building at in a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublessees. Before installing the Rooftop Equipment, Tenant shall submit in a manner acceptable to Landlord for its approval and subject to the requirements of all applicable laws, provided that (which approval i) such antenna shall be a free-standing, non-penetrating antenna or satellite dish not exceeding one meter in Landlord's sole discretiondiameter together with accessory cables and conduits (the “Antenna”); (ii) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment such Antenna shall be done by contractors approved by Landlord in a good and workmanlike manner in compliance with all building codes and regulations, free from any liens or claims of liens and in accordance with all Laws plans and specifications therefor reasonably approved in writing by Landlord, which plans shall show the proposed installation thereof and the method of connecting the same to the facilities within the Premises; (iii) throughout the "Legal Requirements"). If Landlord approves of such plansTerm, Tenant ------------------ shall install keep the Antenna in good condition and repair and perform all maintenance and repairs thereto at Tenant’s sole cost or expense and without voiding or adversely affecting any warranty granted to Landlord with respect to the roof or adversely affecting the watertightness of the roof membrane; (in a good iv) Landlord shall not be responsible for any loss or damage to the Antenna, and workmanlike manner)(except for losses occasioned by the gross negligence or willful misconduct of Landlord) Tenant shall indemnify, maintain hold Landlord harmless and use defend Landlord from and against all claims, damages, liability or expense (including attorney fees) related directly or indirectly to the Rooftop Equipment in accordance with installation, existence, use, maintenance, repair, testing, removal or replacement of the Antenna; (v) Tenant shall be responsible for all Legal Requirements repairs, maintenance, preventing and repairing any leakage or other damage to the Building or any system currently serving the Building related directly or indirectly to the installation, existence, use, maintenance, repair, testing, removal or replacement of the Antenna and, at Landlord’s option, shall obtain all consents and permits required either reimburse Landlord for the cost thereof or cause the same to be performed by contractors and workmen reasonably acceptable to Landlord; (vi) at the request of Landlord, Tenant shall remove or temporarily relocate the Antenna, if necessary, to facilitate any repairs or replacements to the roof of the Building being performed by Landlord; (vii) prior to the expiration of the Term or upon the earlier termination of this Lease, Tenant, at its sole cost, shall remove the Antenna, repair any damages caused thereby and restore the Building to the condition existing prior to the installation and operation thereof; copies (viii) Tenant may have access to the roof to perform any of all the foregoing work only with Landlord’s permission and with Landlord’s supervision; (ix) the use of the Antenna shall not interfere with any transmission or reception equipment presently located in the Building and should such permits interference occur, Tenant shall eliminate the interference within two (2) business days after notice from Landlord, failing which Landlord reserves the right to disconnect power to Tenant’s Antenna; and evidence (x) Tenant shall not provide or resell antenna services to any other tenant or occupant in the Building without Landlord’s prior written approval. Tenant’s rights hereunder shall be coterminous with the Term of such consents must be submitted to Landlord before Tenant begins to install the Rooftop EquipmentLease, as extended herein, including any renewals or extensions thereof. Tenant, at its sole expense and risk, shall ensure that a physical inspection of the rooftop portion of the Antenna equipment occurs at intervals of no more than six (6) months and that this inspection include a survey of structural integrity and watertightness and a review and correction of any loose bolts, fittings or other appurtenances. Tenant shall thereafter maintain all permits necessary for provide a written certification of such inspections to Landlord not more than ten (10) days following each such inspection. In the maintenance and operation absence of the Rooftop Equipment while it is on the Building and operate and maintain the Rooftop Equipment in such a manner so as certification, Landlord shall have the right (but not the obligation) to unreasonably interfere with any other satellite, antennae, conduct or other transmission facility on the Building's roof or in the Building. Landlord may require that arrange for such an inspection and corrective action and to charge Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;for such costs.

Rooftop Equipment. Provided that Tenant complies with the terms of ----------------- this Section, Tenant may, at its risk and expense, install a satellite dish and related communications may place certain equipment and wiring (collectively, the "Rooftop ------- Equipment") on the roof of the Building at Buildings subject to the following additional requirements and restrictions: a. Subject to the provisions of this Section B, the roof of the Buildings may used for housing and operating certain equipment, including, but not limited to a location back-up generator, to be purchased and installed by Tenant as part of Tenant's Work (defined in Exhibit D, all as specifically approved in writing by LandlordLandlord (any equipment installed within the roof of the Buildings, --------- which equipment as the same may be used solely by Tenant and its Permitted Transferees modified, altered or Permitted Sublessees. Before installing replaced during the term hereof, is collectively referred to herein as "Tenant's Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall be in Landlord's sole discretion) plans and specifications which (a) specify in detail the design, location, size, and, in the case of a satellite dish, frequency of the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves Landlord's approval shall not be unreasonably withheld provided Tenant demonstrates to Landlord's satisfaction that the proposed equipment (x) does not interfere with any Building Systems on the roof; (y) will not affect the structural integrity of such plansthe Buildings or impact the roof or the roof membrane in any manner, Tenant ------------------ and (z) shall install (in a good and workmanlike manner), maintain and use the Rooftop Equipment in accordance with be adequately sound-proofed to meet all requirements of Legal Requirements and Landlord's specified maximum decibel levels for equipment operations. b. Tenant shall obtain not install or operate Tenant's Rooftop Equipment until Tenant has obtained and submitted to Landlord copies of all consents required governmental permits, licenses, and permits required authorizations necessary for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. In addition, Tenant shall thereafter maintain comply with all permits necessary for reasonable construction rules and regulations promulgated by Landlord in the installation, maintenance and operation of Tenant's Rooftop Equipment. Tenant's contractor shall be subject to prior written approval by Landlord, and shall be an approved contractor under the Rooftop Equipment while it is terms of the roof warranty. In the event that Tenant, after commercially reasonable efforts, shall be unable to obtain all of the required governmental permits, licenses, and authorizations necessary for the installation and operation of a back-up generator on the roof of Building 311, Tenant may pursue all required governmental permits, licenses, and operate authorizations necessary for the installation and maintain the Rooftop Equipment operation of a back-up generator to be placed adjacent to Building 311 or Building 97, in such a manner so as not location designated by Landlord, in its sole discretion. c. Landlord shall have no obligation to unreasonably interfere with provide any other satelliteservices including, antennaewithout limitation, electric current, or other transmission facility on gas service to the Building's roof or in the Building. Landlord may require that Tenant screen the to Tenant's Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Equipment. d. Tenant shall maintain be responsible for the cost of repairing and maintaining Tenant's Rooftop Equipment and screening device in good repair and condition. Tenant shallthe cost of repairing any damage to the Buildings, at its risk and expense, remove or the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence cost of any necessary improvements to the Buildings, caused by or as a result of the following events: (1) the termination installation, replacement and/or removal of Tenant's right Rooftop Equipment. At the end of the Lease Term, Tenant shall remove all Tenant's Rooftop Equipment and repair any damage caused by such removal as required by Section 5.1.4 of this Lease or the provisions of Exhibit F. e. Landlord makes no warranties or representations to possess Tenant as to the Premises;suitability of the roof for the installation and operation of Tenant's Rooftop Equipment. f. If any of Tenant's Work on the roof of the Buildings, including without limitation the installation and maintenance of Tenant's Rooftop Equipment, damages the roof or invalidates or adversely affects any warranty provided by Landlord to Tenant, Tenant shall be fully responsible for the cost of repairs (and any subsequent repairs to the roof to the extent that any warranty is invalidated or adversely affected). EXHIBIT L: SHUTTLE BUS SCHEDULE 100 Talcott Xxxxxx 7:15 AM 7:25 AM 7:35 AM 200 Talcott Xxxxxx 7:16 AM 7:26 AM 7:36 AM 311 Arsenal Xx. 7:17 AM 7:27 AM 7:37 AM 300 N. Beacxx 7:18 AM 7:28 AM 7:38 AM 100 Talcott Xxxxxx 7:55 AM 8:05 AM 8:15 AM 200 Talcott Xxxxxx 7:56 AM 8:06 AM 8:16 AM 311 Arsenal Xx. 7:57 AM 8:07 AM 8:17 AM 300 N. Beacxx 7:58 AM 8:08 AM 8:18 AM 100 Talcott Xxxxxx 8:35 AM 8:45 AM 8:55 AM 200 Talcott Xxxxxx 8:36 AM 8:46 AM 8:56 AM 311 Arsenal Xx. 8:37 AM 8:47 AM 8:57 AM 300 N. Beacxx 8:38 AM 8:48 AM 8:58 AM 100 Talcott Xxxxxx 9:15 AM 9:30 AM 200 Talcott Xxxxxx 9:16 AM 9:31 AM 311 Arsenal Xx. 9:17 AM 9:32 AM 300 N. Beacxx 9:18 AM 9:33 AM 100 Talcott Xxxxxx 9:39 AM 10:06 AM 200 Talcott Xxxxxx 9:40 AM 10:07 AM 311 Arsenal Xx. 9:41 AM 10:08 AM 300 N. Beacxx 9:42 AM 10:09 AM 100 Talcott Xxxxxx 10:15 AM 10:42 AM 200 Talcott Xxxxxx 10:16 AM 10:43 AM 311 Arsenal Xx. 10:17 AM 10:44 AM 300 N. Beacxx 10:18 AM 10:45 AM 100 Talcott Xxxxxx 10:51 AM 11:18 AM 200 Talcott Xxxxxx 10:52 AM 11:19 AM 311 Arsenal Xx. 10:53 AM 11:20 AM 300 N. Beacxx 10:54 AM 11:21 AM 100 Talcott Xxxxxx 11:27 AM 11:54 AM 200 Talcott Xxxxxx 11:28 AM 11:55 AM 311 Arsenal Xx. 11:29 AM 11:56 AM 300 N. Beacxx 11:30 AM 11:57 AM 100 Talcott Xxxxxx 12:03 PM 12:30 PM 200 Talcott Xxxxxx 12:04 PM 12:31 PM 311 Arsenal Xx. 12:05 PM 12:32 PM 300 N. Beacxx 12:06 PM 12:33 PM 100 Talcott Xxxxxx 12:39 PM 1:06 PM 200 Talcott Xxxxxx 12:40 PM 1:07 PM 311 Arsenal Xx. 12:41 PM 1:08 PM 300 N. Beacxx 12:42 PM 1:09 PM 100 Talcott Xxxxxx 1:15 PM 1:42 PM 200 Talcott Xxxxxx 1:16 PM 1:43 PM 311 Arsenal Xx. 1:17 PM 1:44 PM 300 N. Beacxx 1:18 PM 1:45 PM 100 Talcott Xxxxxx 1:51 PM 2:18 PM 200 Talcott Xxxxxx 1:52 PM 2:19 PM 311 Arsenal Xx. 1:53 PM 2:20 PM 300 N. Beacxx 1:54 PM 2:21 PM 100 Talcott Xxxxxx 2:27 PM 2:54 PM 200 Talcott Xxxxxx 2:28 PM 2:55 PM 311 Arsenal Xx. 2:29 PM 2:56 PM 300 N. Beacxx 2:30 PM 2:57 PM 100 Talcott Xxxxxx 3:03 PM 3:30 PM 200 Talcott Xxxxxx 3:04 PM 3:31 PM 311 Arsenal Xx. 3:05 PM 3:32 PM 300 N. Beacxx 3:06 PM 3:33 PM 100 Talcott Xxxxxx 3:30 PM 4:06 PM 200 Talcott Xxxxxx 3:40 PM 4:07 PM 311 Arsenal Xx. 3:41 PM 4:08 PM 300 N. Beacxx 3:42 PM 4:09 PM 100 Talcott Xxxxxx 4:15 PM 4:42 PM 200 Talcott Xxxxxx 4:16 PM 4:43 PM 311 Arsenal Xx. 4:17 PM 4:44 PM 300 N. Beacxx 4:18 PM 4:45 PM 100 Talcott Xxxxxx 4:51 PM 5:18 PM 200 Talcott Xxxxxx 4:52 PM 5:19 PM 311 Arsenal Xx. 4:53 PM 5:20 PM 300 N. Beacxx 4:54 PM 5:21 PM 100 Talcott Xxxxxx 5:27 PM 5:54 PM 200 Talcott Xxxxxx 5:28 PM 5:55 PM 311 Arsenal Xx. 5:29 PM 5:56 PM 300 N. Beacxx 5:30 PM 5:57 PM 100 Talcott Xxxxxx 6:03 PM 6:30 PM 200 Talcott Xxxxxx 6:04 PM 6:31 PM 311 Arsenal Xx. 6:05 PM 6:32 PM 300 N. Beacxx 6:06 PM 6:33 PM EXHIBIT L-1: 4TH SHUTTLE BUS SCHEDULE 100 Talcott Xxxxxx 0:15 AM 7:25 AM 7:35 AM 7:45 AM 200 Talcott Xxxxxx 0:16 AM 7:26 AM 7:36 AM 7:46 AM 311 Arsenal Xx. 7:17 AM 7:27 AM 7:37 AM 7:47 AM 300 N. Beacxx 7:18 AM 7:28 AM 7:38 AM 7:48 AM 100 Talcott Xxxxxx 0:55 AM 8:05 AM 8:15 AM 8:25 AM 200 Talcott Xxxxxx 0:56 AM 8:06 AM 8:16 AM 8:26 AM 311 Arsenal Xx. 7:57 AM 8:07 AM 8:17 AM 8:27 AM 300 N. Beacxx 7:58 AM 8:08 AM 8:18 AM 8:28 AM 100 Talcott Xxxxxx 0:35 AM 8:45 AM 8:55 AM 9:05 AM 200 Talcott Xxxxxx 0:36 AM 8:46 AM 8:56 AM 9:06 AM 311 Arsenal Xx. 8:37 AM 8:47 AM 8:57 AM 9:07 AM 300 N. Beacxx 8:38 AM 8:48 AM 8:58 AM 9:08 AM 100 Talcott Xxxxxx 0:15 AM 9:30 AM 200 Talcott Xxxxxx 0:16 AM 9:31 AM 311 Arsenal Xx. 9:17 AM 9:32 AM 300 N. Beacxx 9:18 AM 9:33 AM 100 Talcott Xxxxxx 0:39 AM 10:06 AM 200 Talcott Xxxxxx 0:40 AM 10:07 AM 311 Arsenal Xx. 9:41 AM 10:08 AM 300 N. Beacxx 9:42 AM 10:09 AM 100 Talcott Xxxxxx 00:15 AM 10:42 AM 200 Talcott Xxxxxx 00:16 AM 10:43 AM 311 Arsenal Xx. 10:17 AM 10:44 AM 300 N. Beacxx 10:18 AM 10:45 AM 100 Talcott Xxxxxx 00:51 AM 11:18 AM 200 Talcott Xxxxxx 00:52 AM 11:19 AM 311 Arsenal Xx. 10:53 AM 11:20 AM 300 N. Beacxx 10:54 AM 11:21 AM 100 Talcott Xxxxxx 01:27 AM 11:54 AM 200 Talcott Xxxxxx 01:28 AM 11:55 AM 311 Arsenal Xx. 11:29 AM 11:56 AM 300 N. Beacxx 11:30 AM 11:57 AM 100 Talcott Xxxxxx 02:03 PM 12:30 PM 200 Talcott Xxxxxx 02:04 PM 12:31 PM 311 Arsenal Xx. 12:05 PM 12:32 PM 300 N. Beacxx 12:06 PM 12:33 PM 100 Talcott Xxxxxx 02:39 PM 1:06 PM 200 Talcott Xxxxxx 02:40 PM 1:07 PM 311 Arsenal Xx. 12:41 PM 1:08 PM 300 N. Beacxx 12:42 PM 1:09 PM 100 Talcott Xxxxxx 0:15 PM 1:42 PM 200 Talcott Xxxxxx 0:16 PM 1:43 PM 311 Arsenal Xx. 1:17 PM 1:44 PM 300 N. Beacxx 1:18 PM 1:45 PM 100 Talcott Xxxxxx 0:51 PM 2:18 PM 200 Talcott Xxxxxx 0:52 PM 2:19 PM 311 Arsenal Xx. 1:53 PM 2:20 PM 300 N. Beacxx 1:54 PM 2:21 PM 100 Talcott Xxxxxx 0:27 PM 2:54 PM 200 Talcott Xxxxxx 0:28 PM 2:55 PM 311 Arsenal Xx. 2:29 PM 2:56 PM 300 N. Beacxx 2:30 PM 2:57 PM 100 Talcott Xxxxxx 0:03 PM 3:30 PM 200 Talcott Xxxxxx 0:04 PM 3:31 PM 311 Arsenal Xx. 3:05 PM 3:32 PM 300 N. Beacxx 3:06 PM 3:33 PM 100 Talcott Xxxxxx 0:30 PM 4:06 PM 200 Talcott Xxxxxx 0:40 PM 4:07 PM 311 Arsenal Xx. 3:41 PM 4:08 PM 300 N. Beacxx 3:42 PM 4:09 PM 100 Talcott Xxxxxx 0:15 PM 4:42 PM 200 Talcott Xxxxxx 0:16 PM 4:43 PM 311 Arsenal Xx. 4:17 PM 4:44 PM 300 N. Beacxx 4:18 PM 4:45 PM 100 Talcott Xxxxxx 0:51 PM 5:18 PM 200 Talcott Xxxxxx 0:52 PM 5:19 PM 311 Arsenal Xx. 4:53 PM 5:20 PM 300 N. Beacxx 4:54 PM 5:21 PM

Rooftop Equipment. Provided that Tenant complies with shall have the terms of ----------------- this Section, Tenant mayright, at any time during the Term, to install at its risk and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") expense on the roof of the Building at a location approved by Landlord, --------- which equipment may be used solely by Tenant and its Permitted Transferees or Permitted Sublesseesone (1) three- (3) meter satellite dish. Before installing the Rooftop EquipmentIn addition, Tenant shall submit have the right, at any time during the Term, to install on the roof at its expense such other equipment, including satellite dishes, communications antennae and security devices including lighting, as the roof can safely support, as determined by Landlord’s architect in the exercise of its reasonable professional judgment. Landlord shall assist Tenant in obtaining any governmental licenses or approvals necessary for its such equipment. Tenant shall provide to Landlord, for approval (which by Landlord prior to commencement of such installation, detailed plans, specifications and working drawings related thereto, as well as a list of all contractors, subcontractors and others to perform any of such work. Landlord’s approval shall not be unreasonably withheld, conditioned or delayed. All contractors, subcontractors and others to perform all or any portion of such work shall be licensed and bonded in the Commonwealth of Virginia and shall be required to maintain levels of insurance customary in their trades, naming Landlord's sole discretion) plans , Tenant and specifications Landlord’s First Mortgage Lender as additional insureds. Any such installation of satellite dishes, and the use and operation thereof, shall comply with any and all federal, state and local statutes, laws, codes, regulations, ordinances and orders, now or hereafter existing, related thereto. Tenant shall indemify, defend and hold Landlord harmless from and against any and all claims, demands, liability, costs or expenses (including, without limitation, court costs and attorney’s fees), or threat thereof, which (a) specify in detail Landlord may suffer or incur as a result of the designinstallation, locationuse, sizerepair, maintenance, replacement, or removal of such dishes, and, further, Tenant shall repair any damage to the roof resulting therefrom and, in the case of event any roof ** Omitted pursuant to a satellite dish, frequency of confidential treatment request. The confidential portion has been filed separately with the Rooftop Equipment and (b) are sufficiently detailed to allow for the installation of the Rooftop Equipment in SEC. warranty is voided or impaired as a good and workmanlike manner and in accordance with all Laws (the "Legal Requirements"). If Landlord approves of such plansresult thereof, Tenant ------------------ shall install (in a good and workmanlike manner), maintain and use assume the Rooftop Equipment in accordance with all Legal Requirements and shall obtain all consents and permits required for the installation and operation thereof; copies of all such permits and evidence of such consents must be submitted obligation to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Building and operate repair and maintain the Rooftop Equipment in roof to the extent of such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. Tenant shall maintain the Rooftop Equipment and screening device in good repair and condition. Tenant shall, at its risk and expense, remove the Rooftop Equipment (including all wiring related thereto), within five days after the occurrence of any of the following events: (1) the termination of Tenant's right to possess the Premises;warranty.

Rooftop Equipment. Provided that Tenant complies with Subject to the terms of ----------------- this SectionSection 16.28, Tenant mayshall have the right to install, at its risk operate, maintain, repair and expense, install a satellite dish and related communications equipment and wiring (collectively, the "Rooftop ------- Equipment") replace on the roof of the Building at Office Area a satellite dish, antenna, generator and/or HVAC equipment required for its operations in the Premises in the location shown on Exhibit 1.2-2 attached hereto and made a part hereof, together with access to use of available Office Area shafts, conduits and risers to connect to such equipment (collectively, the “Rooftop Equipment”). There shall be no additional charges or fees payable by Tenant in connection therewith. Tenant shall not install any Rooftop Equipment until Landlord shall have approved the size, location, weight and manner of attachment thereof, such approval not to be unreasonably withheld, conditioned or delayed. Tenant’s rights under this Section 16.28 shall be subject to all of the terms and conditions of this Lease, as well as the following additional conditions: (a) Tenant shall be solely and exclusively responsible for all costs, expenses and charges, of every kind, of installing, operating, maintaining, repairing, replacing, and removing the Rooftop Equipment and, except to the extent resulting from the negligence or willful misconduct of Landlord, or its agents, employees or contractors, but subject to the provisions of Sections 13.5 and 16.22, Landlord shall have no liability or obligation in connection therewith. Tenant shall enter into a service contract with a contractor reasonably approved by LandlordLandlord for the installation, --------- which equipment may be used solely by Tenant operation, maintenance, repair, replacement and its Permitted Transferees or Permitted Sublessees. Before installing removal of the Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval contract shall be in subject to Landlord's sole discretion’s reasonable approval. (b) plans and specifications which (a) specify in detail the design, location, size, andIf, in the case reasonable judgment of a satellite dishLandlord, any electrical, electromagnetic, radio frequency or other material interference shall result from the operation of any of the Rooftop Equipment and (b) are sufficiently detailed to allow for any equipment of Landlord or of other tenants placed on the roof of the Office Area prior to installation of Tenant’s Rooftop Equipment, Tenant agrees that Landlord may, at Landlord’s option, shut down Tenant’s equipment upon twenty-four (24) hours’ prior notice to Tenant, which notice may be electronic if given to Xxxxx Xxxxxxx (xxxxxxxx@xxxxxxxx.xxx) or such other person as designed by Tenant in writing from time to time; provided, however, if an emergency situation exists, which Landlord reasonably determines in its good faith discretion to be attributable to the Rooftop Equipment, Landlord shall immediately notify Tenant verbally, who shall act immediately to remedy the emergency situation. Should Tenant fail to so remedy said emergency situation, Landlord may then act to shut down Tenant’s equipment. Except to the extent resulting from the negligence or willful misconduct of Landlord or its agents, employees or contractors, but subject to the provisions of Section 13.5, Tenant shall indemnify Landlord and hold it harmless from, and Tenant waives, all reasonable out-of-pocket expenses, costs, damages, losses, claims or other liabilities arising out of said shutdown. Tenant agrees to cease operations (except for intermittent testing on a schedule approved by Landlord) until the interference has been corrected to the reasonable satisfaction of Landlord. If such interference is caused by telecommunications equipment and has not been corrected to the reasonable satisfaction of Landlord within thirty (30) days, Landlord may require that Tenant immediately remove from the Roof the specific item of telecommunications equipment causing such interference. (c) Tenant shall, at its sole cost and expense, and at its sole risk, install, operate and maintain the Rooftop Equipment in a good and workmanlike manner manner, and in accordance compliance with all Laws electric, communication, and safety codes, ordinances, standards, regulations and requirements, now in effect or hereafter promulgated, of the Federal Government, including, without limitation, the Federal Communications Commission (the "Legal Requirements"). If Landlord approves of such plans, Tenant ------------------ shall install (in a good and workmanlike manner“FCC”), maintain the Federal Aviation Administration (“FAA”) or any successor agency of either the FCC or FAA having jurisdiction over radio or telecommunications, and use of the state, city and county in which the Office Area is located. Tenant shall reasonably cooperate generally with Landlord and other carriers to permit the Office Area’s rooftop to be and remain in compliance with all FCC and OSHA rules and regulations relating to radio frequency emission levels and maximum permissible exposure. Except to the extent resulting from Landlord’s negligence or willful misconduct, but subject to the provisions of Sections 13.5 and 16.22, neither Landlord nor its agents shall be liable to Tenant for any stoppages or shortages of electrical power furnished to the Rooftop Equipment in accordance with all Legal Requirements or the roof area because of any act, omission or requirement of the public utility serving the Office Area, or the act or omission of any other tenant, invitee or licensee or their respective agents, employees or contractors, or for any other cause beyond the reasonable control of Landlord, and Tenant shall obtain all consents and permits required not be entitled to any rental abatement for any such stoppage or shortage of electrical power. Neither Landlord nor its agents shall have any responsibility or liability for the installation conduct or safety of any of Tenant’s representatives, repair, maintenance and operation thereof; copies engineering personnel while in or on any part of all such permits and evidence of such consents must be submitted the Office Area or the roof area. (d) Landlord shall have no obligation to Landlord before Tenant begins provide any electricity or other utilities or services to install the Rooftop Equipment. Tenant shall thereafter maintain all permits necessary be responsible for connecting the Rooftop Equipment to the Office Area’s utility systems and for the maintenance costs and operation expenses of all electricity consumed in connection with the Rooftop Equipment. (e) Tenant shall not make any changes, alterations, or other improvements on or to the roof of the Office Area without Landlord’s prior written consent in each instance, which consent, Landlord may withhold at its discretion; provided, however, in connection with the installation, operation, maintenance, repair or replacement of the Rooftop Equipment, Landlord’s consent shall not be unreasonably withheld, conditioned or delayed. (f) Tenant shall have no right of access to the roof of the Office Area unless Tenant has given Landlord reasonable advance notice and unless Tenant’s representatives are accompanied by a representative of Landlord. Landlord will make a representative available to Tenant (i) during Normal Business Hours upon reasonable advance notice and (ii) during emergencies, as soon as practicable (taking into account the circumstances) after receipt of a request from Tenant. (g) At the expiration or prior termination of this Lease, Tenant shall remove the Rooftop Equipment from the roof of the Office Area, and Tenant shall be responsible for the cost of repairing any damage to the roof of the Office Area caused by the installation or removal of the Rooftop Equipment while it is on or the Building and operate and maintain the Rooftop Equipment in such a manner so as not to unreasonably interfere with any other satellite, antennae, or other transmission facility on the Building's roof or in the Building. Landlord may require that Tenant screen the Rooftop Equipment with a parapet or other screening device acceptable to Landlord. exercise of Tenant’s rights under this Section 16.28. (h) Tenant shall maintain have no right to transfer or assign its rights under this Section 16.28, other than to transfer or assign its rights to install communications equipment to a permitted assignee or sublessee of at least two (2) floors of the Premises. (i) To the maximum extent permitted by law, the Rooftop Equipment and screening device all other related installations shall be at the sole risk of Tenant, and except to the extent caused by negligent acts or willful misconduct by Landlord or its agents, employees or contractors, Landlord shall have no liability to Tenant in good repair the event that the Rooftop Equipment or any related installations are damaged for any reason. (j) Tenant shall comply with all Legal Requirement and conditionInsurance Requirements in connection with Tenant’s exercise of its rights pursuant to this Section 16.28. Landlord shall have the right, upon thirty (30) days’ notice to Tenant, to require Tenant to relocate the Rooftop Equipment to another area on the roof of the Office Area equally suitable for Tenant’s use. In such event, Tenant shall on or before the thirtieth (30th) day after Landlord gives such notice, relocate the Rooftop Equipment and Landlord shall reimburse Tenant for all reasonable costs and expenses incurred by Tenant in connection with said relocation and any resulting relocation of utility lines. In addition to the indemnification provisions set forth in this Lease (which indemnification provisions shall be applicable to the use by Tenant of the Rooftop Equipment), except to the extent resulting from the negligence or willful misconduct of Landlord or its agents, employees or contractors, but subject to the provisions of Sections 13.5 and 16.22, Tenant shall, at its risk to the maximum extent permitted by law, indemnify, defend, and expensehold Landlord harmless from any and all claims, remove losses, demands, actions or causes of actions suffered by any person, firm, corporation, or other entity to the extent that the same arises out of or results from Tenant’s use of the Rooftop Equipment (including all wiring related thereto), within five days after and the occurrence of any of rights granted to Tenant and the following events: (1) the termination performance of Tenant's right to possess the Premises;’s obligations under this Section 16.28.