An Army UH-60 Black Hawk from the 25th Combat Aviation Brigade (25th CAB) operates off the coast of Hawaii during exercise Koa Kai 14-1. Koa Kai is a semiannual exercise in the waters surrounding the Hawaiian islands designed to prepare independent deployers in multiple warfare areas and provide training in a multi-ship environment. (U.S. Navy photo by Chief Mass Communication Specialist John M. Hageman/Released)