151106-N-NV908-099 SOUTH CHINA SEA (Nov. 6, 2015) Marines perform an engine swap on an F/A-18C Hornet, assigned to the Thunderbolts of Marine Strike fighter Squadron (VMFA) 251, on the flight deck of the aircraft carrier USS Theodore Roosevelt (CVN 71). Theodore Roosevelt is operating in the U.S. 7th Fleet area of operations as part of a worldwide deployment en route to its new homeport in San Diego to complete a three-carrier homeport shift. (U.S. Navy photo by Mass Communication Specialist Seaman Chad M. Trudeau/Released)