180124-M-HD015-0010 CAMP PENDLETON, Calif. (Jan. 24, 2018) An amphibious assault vehicle from 3rd Assault Amphibian Battalion, 1st Marine Division, prepares to enter the Pacific Ocean during exercise Iron Fist 2018. The five-week-long exercise focusing on advanced marksmanship, amphibious reconnaissance, fire and maneuver assaults, staff planning, logistical support, medical knowledge sharing, fire support operations, including mortars, artillery and close air support, and amphibious landing operations. (U.S. Marine Corps photo by Cpl. Jacob A. Farbo/Released)