Members of a visit, board, search and seizure team from the guided-missile destroyer USS Paul Hamilton (DDG 60) board U.S. Navy torpedo retriever (TWR 833) during maritime 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. This is the first year San Diego-based ships are also participating.