MARINE CORPS BASE HAWAII - An amphibious assault vehicle makes its way back to shore during a water-training exercise on Marine Corps Base Hawaii, June 4. The purpose of the exercise was to familiarize Marines with the AAV, how it’s operated, and their role within the vehicle. (U.S. Marine Corps photo by Lance Cpl. Matthew Bragg) - MARINE CORPS BASE HAWAII - An amphibious assault vehicle makes its way back to shore during a water-training exercise on Marine Corps Base Hawaii, June 4. The purpose of the exercise was to familiarize Marines with the AAV, how it’s operated, and their role within the vehicle. (U.S. Marine Corps photo by Lance Cpl. Matthew Bragg)