CAMP PENDLETON, Calif. (Dec. 18, 2020) Gas Turbine Systems Technician 2nd Class Maurice Williams inspects an ET40-B gas turbine engine belonging to a landing craft air cushion (LCAC) assigned to Assault Craft Unit (ACU) 5. ACU-5 boasts several intermediate maintenance activities as well as a deployable sea component. (U.S. Navy photo by Chief Operations Specialist Justin Oxford)