U.S. Air Force Airman 1st Class Michael Costello, 633rd Air Base Wing Civil Engineer Squadron firefighter, and Antonio Ortiz, 633rd ABW CES lead firefighter, extinguish flames from a simulated aircraft during a major accident response exercise at Langley Air Force Base, Va., Sept. 22, 2011. The exercise was held to test and evaluate the responses to multifaceted events affecting the installation. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)