The 24th Air Division is an inactive United States Air Force intermediate echelon command and control organization. It was last assigned to First Air Force, Tactical Air Command (ADTAC). It was inactivated on 30 September 1990 at Griffiss Air Force Base, New York. History The Division was activated at Malmstrom Air Force Base, Montana in November 1969, replacing the 28th Air Division in an Aerospace Defense Command (ADCOM) realignment and re-organization of assets. Assigned additional designation of 24th NORAD Region and 24th CONAD Region upon activation with reporting to the NORAD Combat Operations Center at the Cheyenne Mountain Complex, Colorado. The 24th AD was responsible for the air defense of a large area of the upper Great Plains from the 115th meridian west eastward to the 97th meridian west; from the 49th parallel north south to the 41st parallel north. This area encompassed most of Montana, Wyoming, North and South Dakota and most of Nebraska. It was also the command organization for the Semi Automatic Ground Environment (SAGE) Data Center (DC-20) at Malmstrom. Tactical units assigned to the 24th participated in numerous training exercises such as Feudal Indian, Vigilant Overview, and Feudal Keynote. The scope of responsibility for the 24th AD was expanded in 1973 with further ADCOM unit inactivations and consolidations to include the area south along the 104th meridian west to the 33rd parallel north, east to the 97th meridian west. This included most of Kansas, Oklahoma and the panhandle region of Texas. Assumed additional designation 24th ADCOM Region, 8 December 1978 In 1979 it was incorporated into Tactical Air Command with the inactivation of ADCOM as a major command. Under Air Defense Tactical Air Command it continued its mission until 15 April 1982 when it moved to Griffiss Air Force Base, New York and assumed responsibility for most of New England, the northern Mid-Atlantic States and the upper Midwest. In 1985 most active-duty units were inactivated or reassigned to other missions, and the air defense mission came under Air Force Reserve and Air National Guard units under First Air Force. The Division stood down on 30 September 1990, its command, mission, components, and assets were immediately transferred to the Northeast Air Defense Sector and Southeast Air Defense Sector. Lineage Established as the 24th Air Division on 18 November 1969 Activated on 19 November 1969 Inactivated 30 September 1990 Assignments Tenth Air Force, 19 November 1969 Aerospace Defense