U.S. Air Force Tech. Sgt. Bradley Irwin, 1st Maintenance Squadron Packaged Maintenance Plan team member, inspects an air compressor for serviceability during the major accident response exercise on Langley Air Force Base Va., Sept. 22, 2011. The MARE helped evaluate the base personnel’s ability to respond to an aircraft mishap that involved several scenarios. (U.S. Air Force photo by Staff Sgt. Jeff Nevison/Released)