Black Hills NF became operational in 1962); and facilities and cities to be protected by the division included the Salt Lake City military installations west of the Rockies and planned Titan missile launch complexes and an Air Force Plant at the Colorado Front Range. The Reno sector was activated 15 February 1959 and the AN/FSQ-7 at Stead Air Force Base was replaced by Backup Interceptor Control (BUIC) at Fallon Naval Air Station by 1970. In February 1959, the Los Angeles Air Defense Sector was activated during the deployment of the Semi Automatic Ground Environment#Deployment (SAGE) as a subordinate unit of the 27th AD. However, the Denver SCC/CC was cancelled in March 1959; so instead of moving from the Southwest United States to the interior (and the 28th Air Division then taking over as the Southwestern Air Division), the 27th Air Division was inactivated on 1 October 1959 (command transferred to the subordinate Los Angeles Air Defense Sector). Luke AFB Reactivated in January 1966 at Luke Air Force Base, the 27th Air Division consolidation the Los Angeles and Phoenix Air Defense Sectors, and the division assumed the additional designation of 27th NORAD Region after activation of the NORAD Combat Operations Center at the Cheyenne Mountain Complex, Colorado. The Norton SAGE Direction Center closed in June 1966 (the Luke Direction Center was 1 of 6 still open in 1970). When the 27th AD was inactivated in 1969, its mission, personnel and operations center at Luke were transferred to the 26th Air Division. Lineage Constituted as the 27 Air Division (Defense) in September 1950 Activated on 20 September 1950 Inactivated on 1 February 1952 Organized on 1 February 1952 Inactivated on 1 October 1959 Redesignated as the 27th Air Division and activated on 20 January 1966 Organized on 1 April 1966 Inactivated on 19 November 1969 Assignments Western Air Defense Force, 20 September 1950 – 1 October 1959 Air Defense Command, 20 January 1966 Fourth Air Force, 1 April 1966 Tenth Air Force, 15 September 1969 – 19 November 1969 Stations Norton Air Force Base, California, 20 September 1950 – 1 October 1959 Luke Air Force Base, Arizona, 1 April 1966 – 19 November 1969 Components Sector Los Angeles Air Defense Sector, 15 February 1959 – 1 October 1959 Wings 1st Fighter-Interceptor Wing (attached) March Air Force Base, California 20 September 1950 – 1 February 1952 78th Fighter Wing (Air Defense) Hamilton Air