181016-N-FD244-0005 BREMERTON, Wash. (Oct.16, 2018) Shipyard workers watch as a propeller is installed on the aircraft carrier USS Nimitz (CVN 68) at Puget Sound Naval Shipyard and Intermediate Maintenance Facility in Bremerton, Wash., Oct. 16, 2018. Nimitz is in a 15-month docking planned incremental availability to upgrade and renovate a variety of systems. The ship is scheduled to return to sea in May 2019 to perform sea trials in preparation for future operations. (U.S. Navy photo by Brian Kilpatrick/Released)