CELTIC SEA (April 13, 2021) Senior Chief Operations Specialist Christopher Liggins tracks air contacts in combat information center aboard the Wasp-class amphibious assault ship USS Iwo Jima (LHD 7), April 13, 2021. Iwo Jima is operating in the Celtic Sea with Amphibious Squadron 4 and the 24th Marine Expeditionary Unit (24th MEU) as part of the Iwo Jima Amphibious Ready Group. (U.S. Navy photo by Mass Communication Specialist 2nd Class Joshua D. Petrosino)