170720-N-PO203-686 WASHINGTON (July 20, 2017) Dennis Gallagher, an engineer from the Naval Surface Warfare Center, Panama City, explains the Divers Augmented Vision Display (DVAD) to an attendee during the Office of Naval Research's Naval Future Force Science and Technology (S&T) EXPO at the Walter E. Wash. Convention Center. The DAVD is a high-resolution, see-through heads-up display (HUD) embedded directly inside of a diving helmet that enables divers to have real-time visual display of everything from sector sonar, text messages, diagrams, photographs and even augmented reality videos. (U.S. Navy photo by John F. Williams/Released)