ATLANTIC OCEAN (Oct. 5, 2021) Boatswain�s Mate Seaman Zachary Powell, assigned to the San Antonio-class amphibious transport dock ship USS Arlington (LPD 24), fires an M9 pistol from the prone position during live-fire weapon proficiency training on the flight deck, Oct. 5, 2021. Arlington is underway in the Atlantic Ocean conducting advanced phase deployment training. (U.S. Navy photo by Mass Communication Specialist 2nd Class John Bellino)