U.S. Air Force Staff Sgt. Justin Rhodes, a lab technician with the 18th Dental Squadron applies moulage makeup to a simulated gunshot wound victim, at Kadena Air Base, Japan, before an active shooter exercise May 4, 2016. In a push to better prepare the 18th Wing’s Airmen, recent exercises have given Airmen here little to no warning before unfolding into often gruesome or stressful circumstances. (U.S. Air Force photo by Staff Sgt. Maeson L. Elleman/Released)