190405-N-DA737-0152 PEARL HARBOR, Hawaii (April 5, 2019) Capt. Carl Andrew Carlson, center left, commanding officer of the guided-missile destroyer USS Zumwalt (DDG 1000), speaks during a tour of the ship with Rear Adm. William C. Greene, director of fleet maintenance for U.S. Pacific Fleet. Zumwalt is conducting the port visit as part of its routine 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 Communications Specialist 2nd Class Jonathan Jiang/Released)