Spartans seize simulated shooter
U.S. Air Force Staff Sgt. Christian Varela, 48th Security Forces Squadron response force leader, secures a simulated active shooter during an exercise at Royal Air Force Lakenheath, England, Sept. 22. These exercises are conducted bi-annually, in order to ensure all personnel are properly trained to respond accordingly to an active shooter situation. (U.S. Air Force photo/Senior Airman Malcolm Mayfield)