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Stringent FAA regulations have limited the students' ability to flight-test the drone, but calculations suggest that it offers key advantages over existing commercial drones—notably the ability to stay aloft, and thus offer uninterrupted help, for very long periods of time.
more @
https://www.nbcnews.com/mach/tech/long-flying-drone-may-be-game-changer-disaster-relief-ncna779651?cid=par-xfinity_20170706