PACIFIC OCEAN (Aug. 15, 2021) A U.S. Marine with the All Domain Reconnaissance Detachment, 11th Marine Expeditionary Unit (MEU), climbs a caving ladder during sustainment training aboard the amphibious dock landing ship USS Pearl Harbor (LSD 52), Aug. 15, 2021. Marines and Sailors of the 11th MEU and Essex Amphibious Ready Group (ARG) are underway conducting routine operations in U.S. 3rd Fleet. (U.S. Marine Corps photo by Sgt. Jaxson Fryar)