Private First Class Brandon Voris, 19, stands in the middle of his camp as a sandstorm hits his remote outpost near Kunjak in southern Afghanistan's Helmand province October 2010.

Sgt. Thomas James Brennan smokes a cigarette in his bunk surrounded by photographs of his wife Melinda and their daughter Madison, 2, after a night of rain at the remote outpost of Kunjak in southern Afghanistan's Helmand province, October 29 2010.

A U.S. Marine from the First Battallion Eighth Marines Alpha Company aims his weapon during a night patrol in the town of Nabuk in southern Afghanistan's Helmand province, October 31 2010.

An Afghan man is detained by U.S. Marines from the First Battalion, Eighth Marines at their base in Talibjan after a battle against Taliban insurgents in Musa Qala district in southern Afghanistan's Helmand province November 7 2010.

U.S. Marines from the First Batallion Eigth Marines Alpha Company stop during a patrol to speak with villagers at Kunjak in southern Afghanistan's Helmand province, February 19 2011.

Private Serge Huber smokes after coming off sentry duty at Kunjak in Helmand province, February 26 2011.