Common use of ABBREVIATIONS AND DEFINITIONS Clause in Contracts

ABBREVIATIONS AND DEFINITIONS. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act). The Issuer will furnish to any Holder upon written request and without charge a copy of the Indenture. Request may be made to: L-3 Communications Corporation 000 Xxxxx Xxxxxx, 00xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000 Attention: Secretary Telephone: (000) 000-0000 SCHEDULE I5 The initial aggregate principal amount of Securities evidenced by the Certificate to which this Schedule is attached is $ . The notations on the following table evidence decreases and increases in the aggregate principal amount of Securities evidenced by such Certificate. 0 To be included in any Global Note. and irrevocably appoint as agent to transfer this Security on the books of the Issuer. The agent may substitute another to act for him. Date: Your Signature: Signature Guarantee: This assignment relates to $ principal amount of 3.95% Senior Notes due 2024 of L-3 Communications Corporation held in6 book-entry or definitive form by (the “Transferor”). The Transferor has requested the Trustee by written order to exchange or register the transfer of a Note or Notes. [INSERT NAME OF TRANSFEROR] By: Name: Title: Address: Date:

ABBREVIATIONS AND DEFINITIONS. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act). The Issuer will furnish to any Holder upon written request and without charge a copy of the Indenture. Request may be made to: L-3 Communications Corporation X-0 Xxxxxxxxxxxxxx Xxxxxxxxxxx 000 Xxxxx Xxxxxx, 00xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000 Attention: Secretary Telephone: (000) 000-0000 SCHEDULE I5 I2 The initial aggregate principal amount of Securities evidenced by the Certificate to which this Schedule is attached is $ $____________. The notations on the following table evidence decreases and increases in the aggregate principal amount of Securities evidenced by such Certificate. Decrease in Principal Increase in Principal After Such Decrease or Notation by Amount of Securities Amount of Securities Increase Security Xxxxxxxxx 0 To be included in any Global Note. To assign this Security, fill in the form below: (I) or (we) assign and transfer this Security to and irrevocably appoint as agent to transfer this Security on the books of the Issuer. The agent may substitute another to act for him. Date: Your Signature: (Sign exactly as your name appears on the face of this Security) Signature Guarantee: This assignment relates to $ $_____ principal amount of 3.95% Senior Notes due 2024 2016 of L-3 Communications Corporation held in6 in3 ______ book-entry or ______ definitive form by _____________________ (the “Transferor”). The Transferor has requested the Trustee by written order to exchange or register the transfer of a Note or Notes. [INSERT NAME OF TRANSFEROR] By: Name: Title: Address: Date:

ABBREVIATIONS AND DEFINITIONS. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act). The Issuer will furnish to any Holder upon written request and without charge a copy of the Indenture. Request may be made to: L-3 Communications Corporation 000 Xxxxx Xxxxxx, 00xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000 Attention: Secretary Telephone: (000) 000-0000 SCHEDULE I5 I2 The initial aggregate principal amount of Securities evidenced by the Certificate to which this Schedule is attached is $ . The notations on the following table evidence decreases and increases in the aggregate principal amount of Securities evidenced by such Certificate. 0 To be included in any Global Note. To assign this Security, fill in the form below: (I) or (we) assign and transfer this Security to (Insert assignee’s social security or tax I.D. number) (Print or type assignee’s name, address and zip code) and irrevocably appoint as agent to transfer this Security on the books of the Issuer. The agent may substitute another to act for him. Date: Your Signature: Signature Guarantee: This assignment relates to $ $_____ principal amount of 3.954.95% Senior Notes due 2024 2021 of L-3 Communications Corporation held in6 in3 ______ book-entry or ______ definitive form by _____________________ (the “Transferor”). The Transferor has requested the Trustee by written order to exchange or register the transfer of a Note or Notes. [INSERT NAME OF TRANSFEROR] By: Name: Title: Address: Date:

ABBREVIATIONS AND DEFINITIONS. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act). The Issuer will furnish to any Holder upon written request and without charge a copy of the Indenture. Request may be made to: L-3 Communications Corporation 000 Xxxxx Xxxxxx, 00xx Halliburton Company 0000 Xxxxx Xxx XxxxXxxxxxx Parkway East Houston, Xxx Xxxx 00000 Attention: Secretary Texas 77032 Telephone: (000) 000-0000 Attention: General Counsel SCHEDULE I5 I2 The initial aggregate principal amount of Securities evidenced by the Certificate to which this Schedule is attached is $ $____________. The notations on the following table evidence decreases and increases in the aggregate principal amount of Securities evidenced by such Certificate. 0 2 To be included in any Global Note. To assign this Security, fill in the form below: (I) or (we) assign and transfer this Security to (Insert assignee’s social security or tax I.D. number) (Print or type assignee’s name, address and zip code) and irrevocably appoint __________________________________________ as agent to transfer this Security on the books of the Issuer. The agent may substitute another to act for him. Date: Your Signature: (Sign exactly as your name appears on the face of this Security) Signature Guarantee: This assignment relates to $ $_____ principal amount of 3.953.25% Senior Notes due 2024 2021 of L-3 Communications Corporation Halliburton Company held in6 in3 ______ book-entry or ______ definitive form by _____________________ (the “Transferor”). The Transferor has requested the Trustee by written order to exchange or register the transfer of a Note or Notes. [INSERT NAME OF TRANSFEROR] By: Name: Title: Address: Date:: _______________

ABBREVIATIONS AND DEFINITIONS. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act). The Issuer will furnish to any Holder upon written request and without charge a copy of the Indenture. Request may be made to: L-3 Communications Corporation 000 Xxxxx Xxxxxx, 00xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000 Attention: Secretary Telephone: (000) 000-0000 SCHEDULE I5 I2 The initial aggregate principal amount of Securities evidenced by the Certificate to which this Schedule is attached is $ . The notations on the following table evidence decreases and increases in the aggregate principal amount of Securities evidenced by such Certificate. Decrease in Principal Amount of Securities Increase in Principal Amount of Securities Principal Amount of Securities Remaining After Such Decrease or Increase Notation by Security Xxxxxxxxx 0 To be included in any Global Note. and irrevocably appoint as agent to transfer this Security on the books of the Issuer. The agent may substitute another to act for him. Date: Your Signature: Signature Guarantee: This assignment relates to $ principal amount of 3.951.50% Senior Notes due 2024 2017 of L-3 Communications Corporation held in6 in3 book-entry or definitive form by (the “Transferor”). The Transferor has requested the Trustee by written order to exchange or register the transfer of a Note or Notes. [INSERT NAME OF TRANSFEROR] By: Name: Title: Address: Date: