The USAF Fighter Weapons School was designated on 1 January 1954 from the squadron when the Air Crew School graduated its last Combat Crew Training Class (the primary Weapons School mission was gunnery instructor training.) In the mid-1950s for Operation Teapot nuclear testing, 1 of the 12 Zone Commanders was based at Nellis AFB for community liaison/public relations (weapons for other atomic tests were stored at Nellis). Air Training Command suspended training at the Nellis fighter weapons school in late 1956 because of the almost total failure of the F-86 Sabre aircraft used at Nellis, and during 1958 ATC discontinued its Flying Training and Technical Training.