200419-N-AN781-1423 PACIFIC OCEAN (April 19, 2020) The Wasp-class amphibious assault ship USS Essex (LHD 2) fires a Mark-15 Phalanx close-in weapon system (CIWS) while transiting the Pacific Ocean. Essex is underway in the eastern Pacific Ocean conducting routine maritime operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class William Phillips/Released)