I saw video (coupla years ago) of a Russian tracked vehicle using radar and a gatling gun to shoot down a swarm of about 20 drones in about 2 seconds. But (a) i

I saw video (coupla years ago) of a Russian tracked vehicle using radar and a gatling gun to shoot down a swarm of about 20 drones in about 2 seconds. But (a) it was a staged demo; (b) I imagine that drone-swarm technology should be able to defeat that, by having the drones jump around unpredicatably (they're very agile); and (c) tracking radars can only track a finite number of targets. Send up enough drones at once, and one of them will be able to kill the tracking radar.