Cpl. Erick A. Monterrosa, background, a radio operator with Weapons Company, 2nd Battalion, 2nd Marine Regiment, and Lance Cpl. Justin K. Schwartz, foreground, look through their rear sight optics on their M-4 Carbine rifles while patrolling in Laki, Garmsir District, Helmand province, Afghanistan, March 31. With Explosive Ordnance Disposal technicians in support, the Marines used mine detectors to check a bridge and tree lines for improvised explosive devices that sat no more than 50 meters away from the patrol base. - Cpl. Erick A. Monterrosa, background, a radio operator with Weapons Company, 2nd Battalion, 2nd Marine Regiment, and Lance Cpl. Justin K. Schwartz, foreground, look through their rear sight optics on their M-4 Carbine rifles while patrolling in Laki, Garmsir District, Helmand province, Afghanistan, March 31. With Explosive Ordnance Disposal technicians in support, the Marines used mine detectors to check a bridge and tree lines for improvised explosive devices that sat no more than 50 meters away from the patrol base.