WHAT DOES THE U.S. MILITARY WANT WITH ROBOT MANTA RAY SUBS? !USA Darpa Submarine Warfare Underwater Drones Leave a Comment on WHAT DOES THE U.S. MILITARY WANT WITH ROBOT MANTA RAY SUBS? https://www.youtube.com/watch?v=b7I409deCJA (Visited 2 times, 1 visits today)
