180228-N-NG136-108 NORFOLK (Feb. 28, 2018) Sailors tighten a line during a sea and anchor detail aboard the Nimitz-class aircraft carrier USS George H.W. Bush (CVN 77). George H.W. Bush is underway hosting the Board of Inspection and Survey for the ship's material inspection.(U.S. Navy photo by Mass Communication Specialist 3rd Class Zachary P. Wickline/Released)