Unimaginable !! X-47B America’s $1.5 Billion Stealth Drone

The X-47B is an unmanned fight air system provider (UCAS) supplied by Northrop Grumman for the US Navy (USN). The strike fighter-size unmanned plane efficiently accomplished its first-ever autonomous aerial refueling demonstration with an Omega Air KC-707 tanker in April 2015.

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