Getting an FAA exemption to operate commercial drones in American airspace is almost more trouble than it's worth, what with the litany of requirements and restrictions. That's why Google, according to a Guardian report, has been sidestepping those FAA rules and testing its Project Wing UAV over private US land for more than a year. Google apparently leveraged NASA's Certificate of Waiver or Authorization (COA), which allows government agencies to operate UAVs but prohibits commercial use, as part of a joint project the two organizations are working on. What's more, COAs specify that any public agency operating a drone must either own it or be its exclusive operator. That would mean that the Mountain View company either "sold" NASA a Wing prototype or is relying exclusively on NASA pilots to fly the drones.