161111-N-XQ474-074 PHILIPPINE SEA (Nov. 11, 2016) Japan Maritime Self-Defense Force guided-missile destroyer JS Ashigara (DDG) 178 ,front, and the Arleigh Burke-class guided-missile destroyer USS Barry (DDG 52), back, transits the Philippine Sea during a photo exercise as part of Keen Sword 17. KS17 is a biennial, Chairman of the Joint Chiefs of Staff-directed, U.S. Pacific Command-sponsored Field Training Exercise (FTX). KS17 is designed to meet mutual defense objectives by increasing combat readiness and interoperability between Japan Self Defense Forces (JSDF) and U.S. forces. Carrier Strike Group Five (CSG 5) is on patrol in the Philippine Sea supporting security and stability in the Indo-Asia-Pacific region. (U.S. Navy photo by Petty Officer 2nd Class Andrew Schneider/Released)