PACIFIC OCEAN (May 12, 2021) U.S. Marine Corps Cpl. Jose Perez, a ground sensor operator with the 11th Marine Expeditionary Unit (MEU), operates a Ground Base Operational Surveillance System aboard amphibious assault ship USS Essex (LHD 2). Marines and Sailors of the Essex Amphibious Ready Group (ARG) and the 11th MEU are conducting routine training off the coast of southern California. (U.S. Marine Corps photo by Cpl. Israel Chincio)