After some discussion, Arthur and I decided to do polar orbits—scanning in orange slices. By staggering our passes, we would be able to cover the entire planet using the SUDDAR from orbit. Drones would follow up anything interesting with low-altitude visual inspections. The orbital survey wouldn’t be able to detect people directly, of course. But any new construction, working power plants, or farming operations would flag a location for the drones to check out.