On 1 January 1966 MATS was discontinued and its assets were assigned to the new Military Airlift Command (MAC). The 1611th ATW was discontinued and its mission taken over by the 438th Military Airlift Wing. EASTAF was re-designated as the 21st Air Force. 21st AF continued the mission of EASTAF, controlling MAC airlift wings at Dover AFB, Delaware and Charleston AFB, South Carolina and well as McGuire. Depending upon command organization at different times, airlift and airlift support units in Europe, the Azores, Bermuda and throughout the southeastern United States also reported to 21st AF.