Peterson Space Force Base, previously Peterson Air Force Base, Peterson Field, and Army Air Base, Colorado Springs, is a U.S. Space Force Base that shares an airfield with the adjacent Colorado Springs Municipal Airport and is home to the North American Aerospace Defense Command (NORAD), the Space Force's 21st Space Wing, elements of the Space Force's Space Systems Command, and United States Northern Command (USNORTHCOM) headquarters. Developed as a World War II air support base for Camp Carson, the facility conducted Army Air Forces training and supported Cold War air defense centers at the nearby Ent Air Force Base, Chidlaw Building, and Cheyenne Mountain Complex. The base was the location of the Air Force Space Command headquarters from 1987 to 20 December 2019 and has had NORAD/NORTHCOM command center operations since the 2006 Cheyenne Mountain Realignment placed the nearby Cheyenne Mountain Complex centers on standby. On 26 July 2021, the installation was renamed Peterson Space Force Base to reflect its prominent role in the new space service. History Colorado military construction during the buildup of US training installations prior to the bombing of Pearl Harbor included the 1940 Lowry bombardier school at Denver and Camp Carson south of Colorado Springs (HQ completed on 31 January 1942). Sites "in the vicinity of Colorado Springs" were assessed in the summer of 1941 for a USAAF airfield, and during April 1942 the Photographic Reconnaissance Operational Training Unit (PROTU) was activated in a leased facility at Colorado Springs. On 6 May 1942, the site adjacent to the airfield of the 1926 Colorado Springs Municipal Airport was selected, and the airport's airfield was subsequently leased as an "air support field"* for Camp Carson under the "air support base development program". In May 1942, units such as the 5th Mapping Squadron (from Bradley Field) arrived and used city facilities. The "Second Photographic Group Reconnaissance" (activated 7 May 1942 at Will Rogers Field) transferred to Colorado Springs, and the "2nd Group ... headquarters was situated in a former garage across the street from the Post Office, barracks were in the city auditorium ... and the mess hall was located at the busy horseshoe counter of the Santa Fe railway station." Land at the Broadmoor was used for maneuvers, and the 2nd Group initially operated without aircraft. Personnel were also "housed temporarily at Colorado College" and a youth camp near the Woodmen sanitorium. (the 14th Photographic Reconnaissance Squadron