170912-N-NG136-093 NORFOLK (Sept. 12, 2017) Fireman Kevin Brownbayko conducts maintenance on a gasket valve aboard the aircraft carrier USS George H.W. Bush (CVN 77). The ship is pierside in Norfolk, Va., conducting routine maintenance after a seven-month deployment in support of maritime security operations and theater security cooperation efforts in the U.S. 5th and 6th Fleet areas of responsibility. (U.S. Navy photo by Mass Communication Specialist Seaman Zachary P. Wickline/Released)