In this Aug. 24, 2011 photo, a U.S. Marine sniper attached to 3rd Platoon, Kilo Company, 3/4 Marines wipes sweat from his eyes as his spotter looks for concealed militants, at Patrol Base 302, in the Gesresk Valley, Helmand province, southern Afghanistan. The Marines of 3rd Platoon who live inside the mud-walled compound of PB-302 face militants who regularly attack the base from multiple directions using launched grenades, sniper rifles, and AK-47s. (AP Photo/Brennan Linsley)