Tech. Sgt. Michael Skarba, 910th Security Forces Squadron training program manager, inspects his training weapon before participating in an active shooter exercise here, July 26, 2016. Skarba portrayed the shooter in the exercise, opening fire with blank rounds in the base supply building to evaluate responses from building managers and occupants and first responders. The exercise involved the entire base with all buildings going into lock down and some work centers being evacuated while Wing Inspection Team members evaluated. (U.S. Air Force photo/Eric White)