U.S. Soldiers with 2nd platoon, Whiskey Company, 2nd Battalion, 506th Infantry Regiment, attached to the 4th Brigade Special Troops Battalion, transport a simulated casualty to the casualty collection point during a mass casualty exercise at Forward Operating Base Salerno, Khowst province, Afghanistan, Aug. 6, 2013. (U.S. Army photo by Staff Sgt. Todd A. Christopherson/Released)