170721-N-PO203-265 WASHINGTON (Jul. 21, 2017) Lt. Gen. Robert Walsh, Commanding General, Marine Corps Combat Development Command, gives a 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. (U.S. Navy photo by John F. Williams/Released)