Pepper spray is a defensive weapon and just like any other people who carry it, there is no viable offensive application. It's a tool for everyday use, it's not just for flying drones, it has little or nothing to do directly with flying drones...
Drones/GPS use signals that originate from satellites, not telecom towers.
Phones may use telecom towers signals when GPS is unavailable, drones do not. Otherwise drones would get lost in remote areas with no cell reception.
FYI .. no DJI drone used telecommunication towers for GPS or anything else.
Your drone has a GPS receiver that receives GPS signals directly from sats out in orbit.
You can 100% legally fly over the empty stadium. The security guard can't stop you. He can ask you not to. But that's it. As you said, you weren't on their property, so they had no say so.
And you can even do this during a preseason game.
Good morning! Nice photo. Here in Las Vegas I fly over Allegiant Stadium all the time. I do not fly directly over it since it's slightly higher than the allowed height I can fly up to. I've never had any issues here even though its very close to...