U.S. Marine Corps Lance Cpl. Brandon Mann scans the area while providing security with his military working dog, Ty, around the villages of Sre Kala and Paygel in Helmand province, Afghanistan, on Feb. 17, 2012.
U.S. Army Sgt. Cullen Wurzer (34th Infantry Division) scans a nearby mountain range during a search of the Qual-e Jala village, in Afghanistan, Feb. 21, 2011.
Sergeant. Karl King and Private First Class. David Valenzuela, lay down cover fire as other members of their squad maneuver down a street in Al Doura, Iraq (2007)