(From left) Staff Sgt. Mekcos Harris, 39th Security Forces Squadron area one supervisor, and Airmen 1st Class Joshua Peaden and Cheyenna Mosqueda, 39th SFS security response team members, lie on the ground to simulate casualties during a base-wide exercise Jan. 28, 2015, at Incirlik Air Base, Turkey. The exercise tested the response time of security forces and other first responders to an active shooter and mass causality event. (U.S. Air Force photo by Senior Airman Krystal Ardrey/Released)