Active shooter drill – training for threats
U.S. Air Force Airman 1st Class Damian Cole with the 147th Security Forces Squadron, gives instruction on two-man active shooter training at the 147th Group in San Diego, California, Apr. 6, 2019. Active shooter training is in place so that units are prepared for any threat they may encounter. (U.S. Air Force Photo and caption by Tech. Sgt. Joseph Courtney/ RELEASED)