Keeping North America safe for half a century
Colorado Gov. John Hickenlooper, Gen. John Hyten, the Air Force Space Command commander, and Colorado Sen. Cory Gardner unveil the 50th anniversary rededication ceremony plaque at Cheyenne Mountain Air Force Station, Colo., April 15, 2016. With the nickname "America's Fortress," Cheyenne Mountain AFS is situated beneath 2,000 feet of granite and consists of 15 buildings resting on more than 1,300 enormous steel springs. Cheyenne Mountain AFS is owned by the 21st Space Wing at Peterson Air Force Base, Colo., and operated by the 721st Mission Support Group. (U.S. Air Force photo/Staff Sgt. Amber Grimm)