The operations were detected by a group of Adelaide aviation historians who had a member monitoring aircraft radio frequencies 20 hours a day.With a wingspan greater than a 737 airliner and a $200 million price tag, the RQ-4 Global Hawk is the biggest, most expensive unmanned aerial vehicle to ever take to the skies.The spy drone is the jewel in the crown of Americas global electronic intelligence-gathering network. Global Hawk operations are cloaked in secrecy, and the US Air Force likes to keep it that way.But perhaps the Pentagon severely underestimated the vigilance of Adelaide aviation historians the West Beach Aviation Group WBAG.
via Revealed: US flew spy drone missions from Australia – ABC News Australian Broadcasting Corporation.
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