After jumping off his helicopter at a landing zone marked with a smoke grenade, U.S. Army flight medic Staff Sgt. Robert B. Cowdrey, of La Junta, Colo., right, with Charlie Company, All American Dustoff, carries a stretcher to evacuate a U.S. Marine wounded in a rocket-propelled grenade attack, in Marjah, Helmand province, southern Afghanistan, Saturday Feb. 13, 2010. Aero-medical crews, assigned to the 82nd Combat Aviation Brigade, Task Force Pegasus, are positioned throughout southern Afghanistan. (AP Photo/Brennan Linsley)