US Navy Develops Divers Augmented Vision Display (DAVD), that would assist underwater personnel by adding the sonar data and location/position information straight into their head-up display. "This is a capability similar to something from an Iron Man movie," says Dennis Gallagher, leader of the research team.
"Despite the sci-fi slant, the technology is feasible, though still very challenging. Similar technology is available for fighter jet pilots, but creating a wireless, submerged version is a daunting task for researchers". ‎- @cetera
"Underwater work usually involves low-light conditions or salty water; any additional tidbit of visual clue can assist the process. In future the device could also integrate the data from sonar sensors mounted on the helmet, making it even easier to collect and display info." ‎- @cetera