Firefighters from the 633rd Civil Engineer Squadron use a truck to battle a fire on an aircraft burn simulator during an F-22 Raptor crash exercise conducted by the city of Hampton, Va., and Langley Air Force Base, March 28, 2013. The exercise allowed emergency responders from Hampton and Langley to work together and solidify their plan if such an event should occur. (U.S. Air Force photo by Staff Sgt. Wesley Farnsworth/Released)