Soldiers with the U.S. Army's 1-320 Field Artillery Regiment, 101st Airborne Division shield themselves from the dust as a Medevac helicopter takes off outside Combat Outpost Nolen in the Arghandab Valley north of Kandahar July 30, 2010. One soldier lost his leg and another was hit by shrapnel after an Improvised Explosive Device (IED) blew up during a patrol near the base. (REUTERS/Bob Strong)