190820-M-GM961-1021 CAMP PENDLETON, Calif. (Aug. 20, 2019) U.S. Marines with 3rd Assault Amphibian Battalion, 1st Marine Division, clean an AAV-P7/A1 Amphibious assault vehicle after a maintenance run in 21 Area on Marine Corps Base Camp Pendleton, California, Aug. 20, 2019. Marines conduct maintenance runs prior to a field operation to check the status of their vehicles and equipment. (U.S. Marine Corps photo by Lance Cpl. Alison Dostie/Released)