170316-N-YG414-105 YOKOSUKA, Japan (March 16, 2017) Seaman Jonathon Nava, assigned to the U.S. 7th Fleet flagship USS Blue Ridge (LCC 19), pasrticipates in a math exercise during a community relations event at Sullivan's Elementary School. Blue Ridge is in an extensive maintenance period in order to modernize the ship to continue to serve as a robust communications platform in the U.S. 7th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist Seaman Patrick Semales/Released)