The upper bow unit Pre Commissioning Unit (PCU) George H.W. Bush (CVN 77) is lifted into place at Northrop Grumman Newport News. The nuclear-powered aircraft carrier is under construction at Northrop Grumman Newport News shipyard. CVN-77 the tenth and last Nimitz-class aircraft carrier is scheduled for delivery to the U.S. Navy in late 2008. www.navy.mil