U.S. Army Sgt. Keith Stahl uses a stethoscope to listen to the chest of an Afghan man during a medical assistance operation conducted by U.S. Army medical personnel in Khargar, Afghanistan, on Dec. 15, 2004. Stahl is assigned to the 1st Battalion, 168th Infantry Regiment. DoD photo by Sgt. J. Antonio Francis, U.S. Army. (Released