[FrustratedMonky]

I had assumed this was referring to street level flying drones.

Like you see in drone races. But with a little bomb attached.

Even with half life. That could be years. Depending on changes. Old neighborhoods probably haven't changed.. And, not sure I read that deal had a cutoff, or not. Could they continue getting updates. ?

[KaiserPro]

If they are, then SLAM/object avoidance is pretty much the way forward.

The issue you have there is you need a high shutter speed with no rolling shutter to get good reading.