U.S. Marine Corps Lance Cpl. Fabian Covaclembcke, a crewman with Combat Assault Company, 3rd Marine Regiment, shows Tongan marines the safety measures while boarding an AAV-P7/A1 assault amphibious vehicles aboard the Royal Australian Navy landing helicopter dock ship HMAS Adelaide (L01) during Rim of the Pacific (RIMPAC) exercise at sea off the coast of Marine Corps Base Hawaii July 11, 2018. RIMPAC provides high-value training for task-organized, highly capable Marine Air-Ground Task Force and enhances the critical crisis response capability of U.S. Marines in the Pacific. 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 on the world's oceans. RIMPAC 2018 is the 26th exercise in the series that began in 1971. (U.S. Marine Corps photo by Sgt. Zachary Orr)