U.S. Air Force Staff Sgt. Ervin Faison, 633rd Security Forces Squadron emergency control center operator, searches Master Sgt. Scott Wagonblott, simulation shooter, for additional weapons and identification during an active shooter exercise at Langley Air Force Base, Va., Nov. 15, 2012. The exercise tested participants’ ability to address communications and response procedures between first responders and base command and control. (U.S. Air Force photo by Airman 1st Class Teresa Aber/Released)