Execution and Incorporation of this Agreement to Sub-agreements. The Agency-Assisted Contractor shall execute this Agreement and shall incorporate by reference or attach this Agreement to its contract(s) with the architects, engineers and other design professionals. Thus, each design professional (regardless of tier) will be obligated to comply with the terms of this Agreement. The Agency-Assisted Contractor and/or the design professionals shall retain the executed Agreements and make them available to the Agency Compliance Officer upon request.