temporary transfers to the Secretary of Defense pursuant to section 40107(b). 90907. Cooperation with Department of Defense and other Federal agencies after date of transfer At least 1 year prior to the date of transfer, the Corporation, the Department of Transportation, and each Federal department or agency supported by the FAA’s operation of air traffic services, including the Armed Forces, shall enter into a tripartite agreement to— (1) ensure cooperation between the Corporation and the department or agency on the delivery of air traffic services