Driven by the end of the Cold War, economic factors and a smaller perceived threat to its security, the US completely reorganized the Department of Defense and significantly reduced its military forces, beginning in 1989. During 1991 and 1992, the Air Force underwent the most massive restructuring since its establishment as a separate service in 1947. With the restructuring, MAC became the Air Mobility Command (AMC) and absorbed the tanker airlift resources of the former Strategic Air Command (SAC). As the "objective" wing became the hallmark of the new Air Force, AMC re-designated the 60th as the 60th Airlift Wing on 1 November 1991.