A Marine with the maintenance section, Headquarters and Service Company, 1st Tank Battalion, checks the oil level of a Humvee at the 1st Tank Battalion ramp aboard the Marine Corps Air Ground Combat Center, Twentynine Palms Calif., August 29, 2018. Motor Transport Marines with 1st Tank Battalion increased overall readiness by 20% in the past three weeks by working extended hours. (Photo by Lance Cpl. Carley Vedro) - A Marine with the maintenance section, Headquarters and Service Company, 1st Tank Battalion, checks the oil level of a Humvee at the 1st Tank Battalion ramp aboard the Marine Corps Air Ground Combat Center, Twentynine Palms Calif., August 29, 2018. Motor Transport Marines with 1st Tank Battalion increased overall readiness by 20% in the past three weeks by working extended hours. (Photo by Lance Cpl. Carley Vedro)