Francis E. Warren Air Force Base
Warren AFB is the oldest continuously active military installation within the Air Force, established in 1867 by the United States Army as Fort David Allen Russell. The facility came under United States Army Air Forces control on 1 June 1947, and United States Air Force (USAF) respectively on 18 September 1947 until now.
Ent Air Force Base
Ent Air Force Base was an Air Force base located in the Knob Hill neighborhood of Colorado Springs, Colorado. A tent city, established in 1943 to build the base, was initially commanded by Major General Uzal Girard Ent (1900-1948) for whom the base is named. The base was opened in 1951. From 1957 to 1963, the base was the site of North American Aerospace Defense Command (NORAD), which moved to the Cheyenne Mountain Air Force Station. The base became the Ent Annex to the Cheyenne Mountain facility in 1975. The base was closed in 1976. The site later became the location of the United States Olympic Training Center,which was completed July 1978.