Submitted by oodja t3_zxkqdu in philadelphia
gnartato t1_j2bgn8y wrote
Reply to comment by Trafficsigntruther in Helicopters flying over Bryn Mawr area? by oodja
If we ever want drones en mass optical/ir/radar systems will not going to be effective enough.
Either you need predefined routes or you need to know what will be in your path.
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