170405-N-GG458-156 ATLANTIC OCEAN (April 5, 2017) AAV-P7/A1 amphibious assault vehicles enter the well deck of the amphibious transport dock ship USS Arlington (LPD 24). The ship is underway conducting type commander sea trials in preparation for upcoming operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Stevie Tate/Released)