ARMY NATIONAL TRAINING CENTER FORT IRWIN, Calif. - A Marine with Delta Company, 1st Light Armored Reconnaissance Battalion, fires an AT-4 light anti-armor weapon during a weeklong field exercise here, during Nov. 18 to Nov. 24, 2013. The Marines also fired M203 grenade launchers and the M72 light anti-tank weapon to maintain basic combat skills. The Marines conducted a 175 mile road march from their home at Camp Pendleton to Fort Irwin to use the Army base’s training facilities.