From their brief on the drones themselves: https://www.aboutamazon.com/news/transportation/amazon-drone-delivery-arizona https://www.aboutamazon.com/news/transp

From their brief on the drones themselves: https://www.aboutamazon.com/news/transportation/amazon-drone-delivery-arizona https://www.aboutamazon.com/news/transportation/amazon-drone... > Our approval includes the ability to fly Beyond Visual Line of Sight, using our sophisticated on-board detect and avoid system. This is an historic, first-of-its-kind approval for a new drone system and a new operating location following a rigorous FAA evaluation of the safety of our systems and processes. It's true the FAA would have had to have signed off on these so that will be interesting.