Pfc. Merrick Martius, a Light Armored Vehicle crewman, provides maintenance for an infrared light on an LAV-25 during a live-fire gunnery qualification test at Marine Corps Air Ground Combat Center Twentynine Palms,California, Jan. 22, 2016. The qualification test consisted of gunnery training, communication between the vehicle commander and the driver, and cooperation between the crewmembers of the LAV and the command tower. This allows Marines to fire accurately when aiming on targets down range. Martius is an LAV crewman with Headquarters and Service Company, 1st Marine Division, I Marine Expeditionary Force. - Pfc. Merrick Martius, a Light Armored Vehicle crewman, provides maintenance for an infrared light on an LAV-25 during a live-fire gunnery qualification test at Marine Corps Air Ground Combat Center Twentynine Palms,California, Jan. 22, 2016. The qualification test consisted of gunnery training, communication between the vehicle commander and the driver, and cooperation between the crewmembers of the LAV and the command tower. This allows Marines to fire accurately when aiming on targets down range. Martius is an LAV crewman with Headquarters and Service Company, 1st Marine Division, I Marine Expeditionary Force.