The Douglas C-124 Globemaster II, nicknamed "Old Shaky", was a heavy-lift cargo aircraft built by the Douglas Aircraft Company in Long Beach, California. The C-124 was the primary heavy-lift transport for United States Air Force Military Air Transport Service (MATS) during the 1950s and early 1960s, until the C-141 Starlifter entered service. It served in MATS-gained, later Military Airlift Command (MAC)-gained, units of the Air Force Reserve and Air National Guard until 1974.