U.S. sailors attach a chain stopper to the anchor chain aboard the aircraft carrier USS Carl Vinson (CVN 70) April 29, 2012, as the ship departs Perth, Australia, after a port visit. Carl Vinson and Carrier Air Wing (CVW) 17 were deployed to the U.S. 7th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist Seaman Dean M. Cates