PETERSON AIR FORCE BASE, Colo. – A 21st Civil Engineer Squadron explosive ordnance robot inspects a vehicle for explosives outside building 1154 on Peterson Air Force Base, Colo., May 15, 2018, during a Condor Crest exercise. The robot ensured the car bomb at the scene was free of additional explosives. (U.S. Air Force photo by Robb Lingley)