Sailors aboard the guided-missile frigate USS Reuben James (FFG 57) heave a line during an underway replenishment with the Military Sealift Command fleet replenishment oiler USNS Henry J. Kaiser (T-AO 187) during exercise Koa Kai 12-2. Koa Kai is a semiannual exercise in the waters around Hawaii designed to prepare independent deployers in multiple warfare areas and provide training in a multi-ship environment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Dustin W. Sisco)