170721-N-PO203-177 WASHINGTON (Jul. 21, 2017) Chief of Naval Operations, Admiral John Richardson, offers the keynote address during the second day of the Naval Future Force Science and Technology (S&T) EXPO at the Walter E. Washington Convention Center. The EXPO is the Office of Naval Research's (ONR) premier biennial event that provides attendees access to senior naval leadership and technical experts to discuss the status of key programs and new research opportunities. (U.S. Navy photo by John F. Williams/Released)