The 29th Air Division (29th AD) is an inactive United States Air Force organization. Its last assignment was with Air Defense Command, being stationed at Duluth International Airport, Minnesota. It was inactivated on 15 November 1969. History Assigned to Air Defense Command (ADC) for most of its existence, the division's mission was the air defense of Montana, Idaho, Wyoming, and parts of Nevada, Utah, and Colorado. By 1953, the area changed to include North Dakota, South Dakota, and Nebraska. The 29th supervised the training of its units, and participated in numerous training exercises. The division moved from Richards-Gebaur Air Force Base, Missouri, to Duluth International Airport, Minnesota, on 1 April 1966 as part of an ADC reorganization, the division's area changed to include Minnesota, parts of Wisconsin, and North Dakota, and later expanded to cover most of Iowa. Assumed additional designation of 29th NORAD 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 as the : Organized as 29th NORAD Region/Air Division on 1 April 1966, replacing the Duluth Air Defense Sector. Inactivated in November 1969 as ADC phased down its interceptor mission as the chances of a Soviet bomber attack on the United States seemed remote, its mission being consolidated into North American Aerospace Defense Command (NORAD)'s, 23d and 24th NORAD Regions/Air Divisions. Lineage Established as the 29 Air Division (Defense) on 29 January 1951 Activated on 1 March 1951 Inactivated on 1 February 1952 Organized on 1 February 1952 Redesignated 29 Air Division (SAGE) on 1 January 1960 Inactivated on 19 November 1969 Assignments Western Air Defense Force, 1 March 1951 Central Air Defense Force, 16 February 1953 Air Defense Command, 1 January 1960 Tenth Air Force, 1 April 1966 First Air Force, 15 September – 19 November 1969 Stations Great Falls Air Force Base, Montana, 1 March 1951 – 1 February 1952 Richards-Gebaur Air Force Base, Missouri, 1 July 1961 Duluth International Airport, Minnesota, 1 April 1966 – 19 November 1969 Components Sectors Grand Forks Air Defense Sector: 1 January 1959 – 1 December 1963 Grand Forks Air Force Base, North Dakota Great Falls Air Defense Sector: 1 March 1959 – 1 April 1966 Malmstrom Air Force Base, Montana Kansas City Air Defense Sector (Manual): 1 July 1961 – 1 January 1962 Richards-Gebaur Air Force