WASHINGTON (Jul. 20, 2017) Rear Adm. David Hahn, chief of naval research, gives the opening keynote address during 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.

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