CELTIC SEA (April 13, 2021) Marines assigned to the 24th Marine Expeditionary Unit (24th MEU) shoot at targets during a live-fire exercise on the flight deck of the Harpers Ferry-class dock landing ship USS Carter Hall (LSD 50), April 13, 2021. Carter Hall is operating in the Celtic Sea with Amphibious Squadron 4 and the 24th MEU as part of the Iwo Jima Amphibious Ready Group. (U.S. Navy photo by Mass Communication Specialist Seaman Sawyer Connally)