Is it really a mystery when the uplink/downlink frequencies are all right in the sweet spot for existing LTE radios?

I'd guess they are going to set up an LTE cell site with "off band" values use LTE modems/radios/antennas on their drones to co-ordinate flight. Get it all working and then go into Verizon and say "hey we'd like to piggyback on your network for our drone services, this is how much traffic, spectrum, and activity you can expect based on our test data ..."