The two NASA Global Hawk UAVs flying in close formation
The two NASA Global Hawk UAVs flying in formation as part of DARPA's Autonomous High-Altitude Refueling (AHR) program
The two NASA Global Hawk UAVs flew in close formation in a series of flights earlier this year
Two Global Hawk unmanned aircraft have flown in close formation at distances as close as 30 feet (9 m) for the first time. The series of flights took place between January 11 and May 30 this year and marked a major milestone on the way to demonstrating the first autonomous aerial refueling between two unmanned, high-altitude aircraft as part of DARPA’s Autonomous High-Altitude Refueling (AHR) program.
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