interceptor and radar units, the division supervised Air National Guard units that flew interception sorties using (among other aircraft) McDonnell F-101 Voodoos and Convair F-106 Delta Darts. At the same time the division controlled numerous radar squadrons. It was inactivated in 1967 as part of an ADC consolidation of intermediate level command and control organizations, driven by budget reductions required to fund USAF operations in Southeast Asia. The 20th Air Division was activated for a third time in November 1969 under Aerospace Defense Command (ADCOM). The division provided air defense for virtually all of the southeastern United States, except for most of Louisiana from the SAGE DC-4 blockhouse at Fort Lee Air Force Station, Virginia. The division also controlled a CIM-10 Bomarc surface-to-air anti-aircraft missile squadron near Langley Air Force Base until the squadron's inactivation in October 1972. ADCOM was inactivated on 1 October 1979. The atmospheric defense resources (interceptors and warning radars) of ADCOM were reassigned to Tactical Air Command, which formed Air Defense, Tactical Air Command as the headquarters to control them. After 1981, the division controlled units equipped with McDonnell Douglas F-15 Eagle aircraft. Its subordinate units continued to participate in intensive academic training, numerous multi-region simulated (non-flying) exercises, and flying exercises. The division moved to Tyndall Air Force Base, Florida in March 1983 where it was inactivated and its mission, personnel and equipment were transferred to the Southeast Air Defense Sector. Lineage Established as the 20 Air Division (Defense) on 8 June 1955 Activated on 8 October 1955 Inactivated on 1 January 1960 Activated on 20 January 1966 (not organized) Organized on 1 April 1966 Discontinued and inactivated, on 31 December 1967 Activated on 19 November 1969 Inactivated on 1 March 1983 Assignments Central Air Defense Force, 8 October 1955 – 1 January 1960 Air Defense Command, 20 January 1966 Tenth Air Force, 1 April 1966 – 31 December 1967 Aerospace Defense Command, 19 November 1969 Air Defense, Tactical Air Command, 1 October 1979 – 1 March 1983 Stations Grandview Air Force Base (later, Richards Gebaur Air Force Base0, Missouri, 8 October 1955 – 1 January 1960 Truax Field, Wisconsin, 1 April 1966 – 31 December 1967 Fort Lee Air Force Station, Virginia, 19 November 1969 Tyndall Air Force Base, Florida, 1 March 1983 Components Sector Sioux City Air Defense Sector: 1 October 1959 – 1 January 1960 Groups 53d Fighter Group: 1 March 1956 –