NORTH SEA (May 14, 2021) Sailors assigned to the amphibious transport dock ship USS San Antonio (LPD 17), assess a patient's injuries during a mass casualty drill, May 14, 2021. San Antonio is operating in the North 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 Seaman Jacob M. Turrigiano)