PEARL HARBOR (July 17, 2016) Under Secretary of the Navy Dr. Janine Davidson takes a tour of the USS Arizona Memorial with Commander of U.S. Pacific Fleet Adm. Scott Swift during Rim of the Pacific exercise 2016. Twenty-six nations, 45 ships, five submarines, more than 200 aircraft and 25,000 personnel will participate in the biennial RIMPAC exercise scheduled June 30 to Aug. 4, in and around the Hawaiian Islands and Southern California. The world's largest international maritime exercise, RIMPAC provides a unique training opportunity that helps participants foster and sustain cooperative relationships that are critical to ensuring the safety of sea lanes and security on the world's oceans. RIMPAC 2016 is the 25th exercise in the series that began in 1971. (U.S. Navy photo by Mass Communication Specialist 2nd Class Brian M. Wilbur/Released)