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U.S. Navy Lt. Cmdr. Marissa Mayor, a general surgeon with 2nd Medical Battalion, 2nd Marine Logistics Group, in support of Special Purpose Marine Air-Ground Task Force UNITAS LXIII simulates surgery on a Marine while aboard the amphibious transport dock ship USS Mesa Verde (LPD 19) at a surgical training event during exercise UNITAS LXIII in the Atlantic Ocean, Sept. 17, 2022. The training event consisted of Marines patrolling, taking simulated casualties, and simulated lifesaving surgery. UNITAS trains forces to conduct joint maritime operations through the execution of anti-surface, anti-submarine, anti-air, amphibious and electronic warfare operations that enhance warfighting proficiency and increase interoperability among participating navy and marine forces. (U.S. Marine Corps photo by Cpl. Ryan Schmid)