A photo provided by the U.S. Navy, 5th Fleet and dated Aug. 29, 2012, shows USS Navy mine counter measure ships, from right to left, USS Dexrous and USS Sentry get in line to conduct an astern replenishment-at-sea. The United States and more than two dozen allies are gearing up for the largest naval exercises ever in the Middle East focused on countering the threat of anti-ship mines. (AP Photo/U.S. Navy, Toni Burton)