The 542nd Combat Sustainment Wing, sometimes written as 542d Combat Sustainment Wing, is an inactive wing of the United States Air Force last stationed at Robins Air Force Base, Georgia. It was inactivated in June 2010. The wing was first organized in England as the 92nd Bombardment Wing, a heavy bombardment headquarters of VIII Bomber Command during World War II and took part in the air offensive against Germany until the surrender of Germany in 1945. In 1973, Military Airlift Command (MAC) activated the 1550th Aircrew Test and Training Wing at Hill Air Force Base, Utah. The wing trained aircrews for MAC, Air Mobility Command and Air Education and Training Command from 1971 to 1994 for search and rescue and special operations missions. In 1991 the wing was renumbered and consolidated with the 92nd Bombardment Wing as the 542nd Crew Training Wing. It was inactivated in 1994 and its mission, personnel and equipment were transferred to the 58th Special Operations Wing, which was simultaneously activated. The wing was redesignated the 542nd Combat Sustainment Wing in 2005 and activated as a logistics support organization, part of the Air Force Materiel Command Transformation project. History World War II The wing was originally organized in 1943 as the 92d Bombardment Wing, an operational command wing for Eighth Air Force. The wing entered combat on 11 December 1943, but its groups were withdrawn and it was not operational again until May 1944, although it conducted flying training operations in April. The wing flew in combat in the European Theater until November 1944 when its assigned bombardment groups were attached to another wing. In February 1945 the groups were reassigned. The wing returned to the United States in July 1945 and was disbanded the following month. Crew Training The 1550th Aircrew Test and Training Wing was activated in 1973 at Hill Air Force Base, Utah, where it trained all USAF helicopter aircrews and trained HC-130 crews for search and rescue missions. It also provided pararescue training and, operational test and evaluation of materiel, and performed local search and rescue missions. It moved to Kirtland Air Force Base, New Mexico. in 1976 and expanded its mission to include special operations training. By 1990, the wing's primary focus would be on special operations training. In 1983, the wing deployed three aircraft to support Operation Urgent Fury, the invasion of Grenada in the Windward Islands. From 1984 it