Marines prepare to fire rounds from an M777A2 155 mm howitzer at East Fuji Maneuver Area in mainland Japan, Sept. 11. The Marines wait for fire commands from the fire direction center prior to sending rounds downrange. The Marines are with Battery O, 5th Battalion, 14th Marine Regiment, 4th Marine Division, assigned to 3rd Battalion, 12th Marines, 3rd Marine Division, III Marine Expeditionary Force, under the unit deployment program. - Marines prepare to fire rounds from an M777A2 155 mm howitzer at East Fuji Maneuver Area in mainland Japan, Sept. 11. The Marines wait for fire commands from the fire direction center prior to sending rounds downrange. The Marines are with Battery O, 5th Battalion, 14th Marine Regiment, 4th Marine Division, assigned to 3rd Battalion, 12th Marines, 3rd Marine Division, III Marine Expeditionary Force, under the unit deployment program.