Medics with 4th "Dark Horse" Squadron, 9th U.S. Cavalry Regiment, 2nd "Black Jack" Brigade Combat Team, 1st Cavalry Division, Fort Hood, Texas, provide first aid to a simulated casualty during a Black Jack contingency operations exercise on Bagram Air Field, Afghanistan, Nov. 12, 2013. (U.S. Army photo by Sgt. Quentin Johnson, 2nd BCT PAO, 1st Cavalry Division)