Marines with Truck Company, 3rd Marine Division, III Marine Expeditionary Force, standby for explosive ordnance disposal to arrive while keeping vigilant for possible enemy combatants during a motorized operations course aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., July 30. The Marines performed the exercise to better themselves in the event of a real-life scenario. - Marines with Truck Company, 3rd Marine Division, III Marine Expeditionary Force, standby for explosive ordnance disposal to arrive while keeping vigilant for possible enemy combatants during a motorized operations course aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., July 30. The Marines performed the exercise to better themselves in the event of a real-life scenario.