Heather Brady (center), a safety diver with Survival Systems USA, takes the practical application portion of her qualification exam at the Camp Hansen Pool, May 24. The Modular Amphibious Egress Trainer course, which is taught by Survival Systems, annually trains Marines and sailors with the 31st Marine Expeditionary Unit. (Official Marine Corps photo by Cpl. Michael A. Bianco) - Heather Brady (center), a safety diver with Survival Systems USA, takes the practical application portion of her qualification exam at the Camp Hansen Pool, May 24. The Modular Amphibious Egress Trainer course, which is taught by Survival Systems, annually trains Marines and sailors with the 31st Marine Expeditionary Unit. (Official Marine Corps photo by Cpl. Michael A. Bianco)