Northrop Grumman X-47b UCAV: US Navy Testing New Stealth Drone Advanced for $ 1.5 Billion !USA Drones Naval Leave a Comment on Northrop Grumman X-47b UCAV: US Navy Testing New Stealth Drone Advanced for $ 1.5 Billion https://www.youtube.com/watch?v=YFeeg_1WcVg (Visited 2 times, 1 visits today)
