Gil Garcia, a safety diver and instructor at the 1st Marine Regiment Swim Tank Modular Amphibious Egress Trainer, gives Marines with 13th Marine Expeditionary Unit, Command Element, a glimpse at the Submerged Vehicle Egress Trainer during the Modular Amphibious Egress Trainer Course aboard Marine Corps Base Camp Pendleton, Calif., Jan. 25. Instructors at the pool teach Marines and sailors to not only exit helicopters, but vehicles such as humvees.