The 140th Wing is comprised of over 1600 personnel who support multiple operational missions. Headquartered at Buckley Air Force Base in Aurora, Colorado, the wing flies and maintains F-16C+ Fighting Falcon aircraft under Air Combat Command and stands alert 24/7 to protect the central U.S. from airborne threats. The wing also operates two space missions; a one-of-a-kind early-warning Mobile Ground System, located at Greeley Air National Guard Station, Greeley, Colo. and a space control squadron and training detachment at Peterson Air Force Base, Colorado Springs, Colo. The 140th Wing also supports US Pacific Command with a unique civil engineering flight.