Marines with Headquarters and Service Company, 3rd Assault Amphibian Battalion, stage their assault amphibious vehicles after completing a nine-day field exercise aboard Marine Corps Base Camp Pendleton, Calif., March 19, 2014. The training consisted of live-fire maneuvers, a gas chamber, combat marksmanship training and counter improvised explosive device training. The Marines fired numerous weapons systems including light anti-armor weapons and machine guns.