An Afghan National Army soldier demonstrates how to apply a tourniquet on another soldier's arm during a medical class, Feb. 25, 2013, in Farah province. The soldiers received a class from Afghan medics and coalition forces on how to properly use tourniquets in hopes to help save each others' lives in the event of them being injured on the battlefield. (U.S. Marine Corps photo by Sgt. Chadwick de Bree/Released)