160510-N-PI704-023 ATLANTIC OCEAN (MAY 10, 2016) Marines from the 22nd Marine Expeditionary Unit disembark the well deck aboard the amphibious transport dock ship USS San Antonio (LPD 17). San Antonio is underway with the Wasp Amphibious Ready Group participating in Composite Training Unit Exercise. (U.S. Navy photo by Mass Communication Specialist Seaman Jacob Mathews/Released)