a consolidation with the inactivating Phoenix Air Defense Sector. DC-17 at Norton was inactivated a few months later on 25 June 1966, its mission being consolidated with SAGE Data Center DC-21 at Luke AFB under the 27th AD. The SAGE Direction Center closed in 1966 along with the other ADC facilities at Norton. It became the home of the Air Force Audiovisual Service. The windowless, temperature controlled SAGE structure was perfect for film storage. It also was the home of the Air Combat Camera Service. After Norton closed in April 1994, the facility was essentially abandoned, and remained so until 2018 when the building was demolished to make room for future development. Closure Norton was placed on the Department of Defense's base closure list in 1989 (the same year that the DoD signed the Federal Facilities Agreement with the EPA). The closure was cited as due to environmental wastes, inadequate facilities, and air traffic congestion (due to air traffic from Ontario International Airport, twenty miles (32 km) west, and Los Angeles International Airport, west). The last of the facilities on the base were closed in 1995. Previous names Municipal Airport San Bernardino (under Army Air Forces jurisdiction), 2 July 1942 San Bernardino Army Air Field, 14 July 1942 San Bernardino Air Field, 24 December 1947 San Bernardino Air Force Base, 13 January 1948 Norton Air Force Base, 2 March 1950 – 1 April 1994 Major commands to which assigned Fourth Air Force, 2 July 1942 – 13 October 1942 Air Service Command, 13 October 1942 – 14 July 1944 AAF Materiel and Services Command, 14 July – 31 August 1944 AAF Technical Services Command, 31 August 1944 – 1 July 1945 Air Technical Services Command, 1 July 1945 – 9 March 1946 Air Materiel Command, 9 March 1946 – 1 April 1961 Air Force Logistics Command, 1 April 1961 – 1 July 1966 Military Airlift Command, 1 July 1966 – 1 June 1992 Air Mobility Command, 1 June 1992 – 1 April 1994 Major units assigned 2193rd Communications Squadron 11th Station Complement, 11 May 1942 – 1 February 1943 499th Base HQ/Air Base Squadron, 1 February 1943 – 1 April 1944 4126th Army Air Force Base Unit, 1 April 1944 – 26 September 1947 4126th Air Force Base Unit, 26 September 1947 – 31 August 1948 2928th Depot Maintenance Group, 31 August 1948 – 1 May 1953 9077th Air Reserve