Airmen from the 60th Security Forces Squadron respond to an active-shooter exercise Nov. 18, 2014, at Travis Air Force Base, California. Travis members tested their preparedness during a simulated active-shooter exercise at vacant Bldg. 235. The base wide scenario was played out in a realistic, gritty detail, all in effort to prepare emergency personnel and all Travis employees for a potential crisis. (U.S. Air Force photo by Heide Couch)
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