The guided missile destroyer USS Halsey (DDG 97) returns to Joint Base Pearl Harbor-Hickam, Hawaii, after participating in Koa Kai 14-1 Jan. 31, 2014. Koa Kai is a semiannual U.S. Navy exercise to prepare and test ships' readiness to deploy and respond quickly to support maritime strategy. (U.S. Navy photo by Mass Communication Specialist 3rd Class Diana Quinlan/Released)