FILE - In this file photo from Wednesday, June 15, 2016, an F/A-18 Hornet takes off the deck of the nuclear-powered aircraft carrier the USS John C. Stennis during joint military exercise between the United States, Japan and India off the coast 180 miles east of Japan's southernmost island of Okinawa. The U.S. says at least one Chinese ship tailed the USS John C. Stennis daily during its recent cruise through the South China Sea, although no hostile incidents were reported. 