180709-N-OS584-0276 PEARL HARBOR (July 9, 2018) The Royal Australian Navy Anzac-class frigate HMAS Toowoomba (FFH 156) departs Joint Base Pearl Harbor-Hickam, Hawaii, during Rim of the Pacific (RIMPAC) exercise 2018. Twenty-five nations, 46 ships, five submarines, approximately 200 aircraft and 25,000 personnel are participating in RIMPAC from June 27 to Aug. 2 in and around the Hawaiian Islands and Southern California. RIMPAC is the World's largest international maritime exercise, providing a unique training opportunity while fostering and sustaining cooperative relationships among participants critical to ensuring the safety of sea lanes and security of the World's oceans. (U.S. Navy photo by Mass Communication Specialist 1st Class Jimmie Crockett/Released)