New Hydrogen-Powered Spy Robot Flies Silently at 12,000 Feet to Beat Enemy Radars Zepher Flight Labs (ZFL), based in Washington, has made significant progress in developing high-altitude, hydrogen-powered drones that are set to revolutionize the world of surveillance and reconnaissance. These cutting-edge spy robots have the ability to fly silently at an impressive altitude of […]
Tag: High-Altitude Reconnaissance
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