190324-N-DA737-0067 KETCHIKAN, Alaska March 24, 2019) Lt. j.g. Heather Bui, from San Diego, speaks to visitors during a tour of the guided-missile destroyer USS Zumwalt (DDG 1000) in Ketchikan, Alaska, March 24, 2019. Zumwalt is conducting the port visit as part of its routine underway operations in the eastern Pacific. Zumwalt-class destroyers provide the Navy with agile military advantages at sea and with ground forces ashore. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jonathan Jiang/Released)