A member of the U.S. Navy Regional Fire Rescue unit tests an F-22 Raptor burn simulator before the start of a crash exercise conducted by the city of Hampton, Va., and Langley Air Force Base, March 28, 2013. The mock aircraft frame features propane hoses running along the inside and outside of the body, and allows crews to control the intensity and scope of a fire during training exercises. (U.S. Air Force photo by Staff Sgt. Wesley Farnsworth/Released)