U.S. Army Sgt. 1st Class Peter Bracket, right, provides medical attention to a simulated casualty during a mass casualty exercise at Forward Operating Base Salerno, Khost province, Afghanistan, Aug. 6, 2013. The mass casualty, or MASCAL exercise was designed to test the medical systems and protocols of a unit’s ability to quickly and efficiently locate, triage and treat casualties. Bracket, a platoon sergeant, was assigned to the 2nd Platoon, Whiskey Company, 2nd Battalion, 506th Infantry Regiment, attached to the 4th Brigade Special Troops Battalion. (U.S. Army photo by Maj. Kamil Sztalkoper/Released)