CAMP PENDLETON, Calif. (Sept. 17, 2020) U.S. Marines with 3rd Assault Amphibian Battalion, 1st Marine Division conduct a demonstration with the amphibious combat vehicle during a display for Secretary of Defense Mark T. Esper at Camp Pendleton, California, Sept. 17, 2020. The amphibious combat vehicle will replace the amphibious assault vehicle in all assault amphibian battalions across the Marine Corps, equipping Marines to effectively conduct sea-to-shore operations. (U.S. Marine Corps photo by Staff Sgt. Kyle C. Talbot)