U.S. Soldiers with the 801st Brigade Support Battalion transport a simulated casualty to an awaiting UH-60 Black Hawk helicopter, assigned to Charlie Company, 3rd Battalion, 238th Aviation Regiment, a combined New Hampshire and Michigan National Guard medical evacuation unit, during a mass casualty exercise at Forward Operating Base Salerno, Khost province, Afghanistan, Aug. 6, 2013. (U.S. Army photo by Staff Sgt. Todd A. Christopherson/Released)