A U.S. soldier is brought to the emergency room at the U.S. hospital at Bagram Air Field, north of Kabul, after he was wounded by a roadside bomb in Wardak province, June 2009. The facility uses both cutting-edge technology as well as old techniques discovered anew to treat the massive number of wounded soldiers who pass through. Rafiq Maqbool/AP hide caption

itoggle caption Rafiq Maqbool/AP

U.S. soldiers return fire upon a sudden attack by Taliban on Combat Outpost Badel in eastern Afghanistan near the Pakistan border, Dec. 25. Rafiq Maqboold/AP hide caption

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Army medics and soldiers carry a wounded soldier onto an Air Force C-17 at Bagram Air Field in this Aug. 8, 2002, photo. Members from the Aeromedical Evacuation Squadron at Bagram quickly reconfigure the hold of the massive cargo plane into a flying hospital that will take wounded troops from the war zone to American hospitals in Europe and the United States. Wally Santana/Pool/Getty Images hide caption

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An Afghan construction worker washes up before evening prayers in Kabul's Old City of Murad Khane. David Gilkey/NPR hide caption

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October 2009 file photo: U.S. Army Specialist Damyon Miller from the 3rd Platoon, Charlie Company, 1st Infantry Regiment, 5th Stryker Brigade Combat Team, 2nd Infantry Division, mans a machine gun mounted at the back of a Stryker vehicle as the large armored convoy patrols near the Afghanistan and Pakistan border. Romeo Gacad /AFP/Getty Images hide caption

itoggle caption Romeo Gacad /AFP/Getty Images

A Taliban militant (at right with an AK-47 rifle) observes farmers as they collect resin from poppies in an opium poppy field in Afghanistan's Helmand province in 2008. The Taliban not only take a cut from poppy farmers, they are becoming bigger players in running drug labs and smuggling. Poppies are used to make opium, the raw ingredient for heroin, considered to be a major funding source for the Taliban. AP hide caption

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