The Royal Australian Navy frigate HMAS Sydney (FFG 03), front, the Japan Maritime Self-Defense Force destroyer JS Murasame (DD 101) and the guided-missile destroyer USS Chung-Hoon (DDG 93) are underway during Pacific Bond 2013. Pacific Bond is a U.S. Navy, Royal Australian Navy, and Japan Maritime Self-Defense Force maritime exercise designed to improve interoperability and further relations between nations.