Active-shooter exercise tests first responders
U.S. Air Force Senior Airman Dennis Schoomaker, left, 100th Security Forces Squadron combined controller, and U.S. Senior Airman Miguel Luna, 100th SFS response force leader, clear a building as they search for a simulated active shooter during an exercise Aug. 25, 2015, on RAF Mildenhall, England. The exercise was conducted to test 100th SFS, 100th Civil Engineer Squadron Fire Department and 48th Medical Group personnel on their response to an active shooter incident. (U.S. Air Force photo by Karen Abeyasekere/Released)