Reno Air Defense Sectors. Assumed additional designation of 26th NORAD Region and 26th CONAD Region after activation of the NORAD Combat Operations Center at the Cheyenne Mountain Complex, Colorado and reporting was transferred to NORAD from ADC at Ent Air Force Base in April 1966. The division was gradually phasing down until it replaced the 27th Air Division at Luke Air Force Base, Arizona in November 1969, when in an ADCOM reorganization of atmospheric defense forces, the command became responsible for the air defense of a large area of the southwest. In October 1979, it transferred to Tactical Air Command (ADTAC) and continued to supervise atmospheric defense forces of its assigned AOR. Assumed additional designation 26th ADCOM Region on 8 December 1978. Began phase-down of operations with activation of new Southwest Air Defense Sector (SWADS) in July 1987. Engaged chiefly in transfer of mission to SWADS 1987–1990. Inactivated on 1 October 1990. Lineage Established as the 26th Air Defense Division on 21 October 1948 Activated on 16 November 1948 Re-designated: 26th Air Division (Defense) on 20 June 1949 Inactivated on 1 February 1952 Organized on 1 February 1952 Redesignated 26th Air Division (SAGE) on 8 August 1958 Redesignated 26th Air Division on 1 April 1966 Inactivated on 30 September 1969 Reactivated on 18 November 1969 Organized on 19 November 1969 Inactivated on 30 September 1990 Assignments First Air Force, 16 November 1948 Air Defense Command, 1 April 1949 (attached to Eastern Air Defense Force after 17 November 1949) First Air Force, 16 November 1949 (remained attached to Eastern Air Defense Force) Eastern Air Defense Force, 1 September 1950 – 1 February 1952 Eastern Air Defense Force, 1 February 1952 Air Defense Command, 1 August 1959 Fourth Air Force, 1 April 1966 – 30 September 1969 Tenth Air Force, 19 November 1969 Aerospace Defense Command, 1 December 1969 Air Defense Tactical Air Command, 1 October 1979 First Air Force, 6 December 1985 – 30 September 1990 Stations Mitchel Air Force Base, New York, 16 November 1948 Mitchel Air Force Base Sub Base #3, (later) Roslyn Air Force Station, New York, 18 April 1949 Syracuse Air Force Station (later Hancock Field), New York, 15 August 1958 Stewart Air Force Base, New York, 15 June 1964 Adair Air Force Base, Oregon, 1 April 1966 – 30 September 1969 Luke Air Force Base, Arizona 19 November 1969 March Air Force Base, California, 31 August