Comment restricting drones generally doesn't make sense (Score 1) 236
What does make sense is a radar/acoustic/lidar "fence", with some sort of point-defence laser/maser/EMP/etc system to disable drones that enter restricted airspace around sensitive areas.
On of the issues will be minimizing collateral damage--debris raining down on people, backscatter from the radiation pulse, missed shots hitting innocent people/equipment, etc.