180214-N-SJ730-282 NORFOLK (Feb. 14, 2018) Senior Chief Boatswain's Mate Luke Doddy, right, instructs Seaman Danielle Schremm during a sea and anchor detail aboard the aircraft carrier USS George H.W. Bush (CVN 77). The ship is underway conducting routine maintenance in preparation for the Board of Inspection and Survey (INSURV). (U.S. Navy photo by Mass Communication Specialist 2nd Class Hank Gettys/Released)