160723-N-MA158-007 PORTSMOUTH, Va. (July 23, 2016) The aircraft carrier USS George H.W. Bush (CVN 77) departs Norfolk Naval Shipyard for sea trials July 23. GHWB has been at the shipyard since June 16, 2015 for a Planned Incremental Availability. Major work performed included upgrades to the carrier's Vacuum Collection Holding Tanks and close-in weapons system. (U.S. Navy photo by Shayne Hensley/Released)