U.S. Air Force Master Sgt. Scott Wagonblott, 633rd Communications Squadron information assurance manager, simulates shooting Airman 1st Class Putthaporn Boonpreda, 633rd Civil Engineer Squadron air terminal representative, during an active-shooter exercise at Langley Air Force Base, Va., Nov. 19, 2013. The exercise tested the ability of personnel to handle possible threats during everyday operations. (U.S. Air Force photo by Airman Areca T. Wilson/Released)