FILE PHOTO - Arleigh Burke-class guided-missile destroyer USS Mustin (DDG 89) transits in formation with Japan Maritime Self-Defense Force ships JS Kirisame (DD 104) and JS Asayuki (DD 132) during bilateral training in South China Sea on April 21, 2015. Courtesy David Flewellyn/U.S. Navy/Handout via REUTERS

FILE PHOTO – Arleigh Burke-class guided-missile destroyer USS Mustin (DDG 89) transits in formation with Japan Maritime Self-Defense Force ships JS Kirisame (DD 104) and JS Asayuki (DD 132) during bilateral training in South China Sea on April 21, 2015. Courtesy David Flewellyn/U.S. Navy/Handout via REUTERS

US guided-missile destroyers during bilateral training with Japan in the South China Sea on April 21, 2015. Courtesy David Flewellyn/US Navy Handout via Reuters

September 19, 2016 6:46 AM (UTC+8)