Check out “Argus” on this 5 minute youtube from PBS Nova. It’s a 1.6 billion pixel UAV camera, can zoom down to 65 spots under the control of ground techs, while still watching an entire city. It’s all stored, so they can go back in time to any minute and see who was where doing what, in recorded video. The entire city, zoom down to anywhere, in real time or in the past. Amazing. Big Brother is coming fast.
So the problem is not so much the drone itself, but (1) those who give the ground techs their orders and (2) the ground techs and analysts. Find out who they are, where they live and work, how they travel, where they can be found when off duty. They will be among the primary targets when the SHTF.