U.S. Air Force Airman 1st Class Michael Costello, 633rd Air Base Wing Civil Engineer Squadron fire fighter, and Antonio Ortiz, 633rd ABW CES lead firefighter, eliminate a simulated aircraft fire during an exercise at Langley Air Force Base, Va., Sept. 22, 2011. The major accident response exercise was designed to evaluate the base's ability to respond to an aircraft mishap that involves several interconnected incidents. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)