Members of the McDonald Army Health Center Installation Support Team at Fort Eustis Emergency Medical Services treat simulated casualties during an active shooter exercise at Fort Eustis, Va., June 26, 2014. The exercise involved multiple emergency support agencies, including the 733rd Security Forces Squadron, Fort Eustis Emergency Medical Services, the Fort Eustis Fire Department, McDonald Army Health Center and Newport News Fire Department. (U.S. Air Force photo by Staff Sgt. Katie Gar Ward/Released)