ATLANTIC OCEAN (May 27, 2023) Marines and Sailors aboard the San Antonio-class amphibious transport dock ship USS Mesa Verde (LPD 19) conduct surgery as part of a mass casualty drill at sea during composite training unit exercise (C2X) in the Atlantic Ocean, May 27, 2023. C2X is the last exercise in the pre-deployment training program for the Bataan Amphibious Ready Group and 26th Marine Expeditionary Unit. (U.S. Marine Corps photo by Cpl. Aziza Kamuhanda)