171020-N-UX013-010 YOKOSUKA, Japan (Oct. 20, 2017) A tugboat escorts the amphibious dock landing ship USS Ashland (LSD 48) away from the pier as the ship departs Yokosuka, Japan. Ashland was in Yokosuka for a specialized training visit and to undergo readiness certifications in critical mission areas. (U.S. Navy photo by Mass Communication Specialist 3rd Class Jonathan Clay/Released)