200313-N-LN075-1032 ATLANTIC OCEAN (Mar. 13, 2020) The Wasp-class amphibious assault ship USS Iwo Jima (LHD 7) conducts a close-in weapon system (CIWS) pre-action aim calibration (PAC) fire exercise, Mar. 13, 2020. CWIS PAC fire is a scheduled exercise performed to enhance the crew�s ability to operate the weapon. (U.S. Navy photo by Mass Communication Specialist 3rd Class Jessica Kibena/Released)