180703-N-ZZ513-2126 PEARL HARBOR (July 3, 2018) Commanding

180703-N-ZZ513-2126 PEARL HARBOR (July 3, 2018) Commanding officer of the Royal Australian Navy submarine HMAS Rankin (SSG 78), Cmdr. Gary Lawton (back) shows the boat's decompression chamber to Vice Adm. John D. Alexander, commander, U.S. 3rd Fleet during a tour, July 3. The Australian submarine is moored in Pearl Harbor during the Rim of the Pacific (RIMPAC) 2018 exercise. Twenty-five nations, 46 ships, five submarines, about 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. The world’s largest international maritime exercise, RIMPAC provides 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. RIMPAC 2018 is the 26th exercise in the series that began in 1971. (U.S. Navy Photo by Mass Communication Specialist 3rd Class Natalie M. Byers/Released)