PACIFIC OCEAN (May 21, 2021) Sailors test a Naval Firefighting Thermal Imager (NFTI) during a damage control drill aboard amphibious assault ship USS Essex (LHD 2), May 21, 2021. Sailors and Marines of the Essex Amphibious Ready Group (ARG) and the 11th Marine Expeditionary Unit (MEU) are underway conducting integrated training off the coast of southern California. (U.S. Navy photo by Mass Communication Specialist Seaman Sang Kim)