The threat is not in a single one of them, the threat is in drone swarms. We (as in: the general public, I'm quite sure secluded labs have working prototypes) d

The threat is not in a single one of them, the threat is in drone swarms. We (as in: the general public, I'm quite sure secluded labs have working prototypes) don't have the technical details figured out, but in 5 years, it will be possible for a swarm of 100's of these things to appear out of nowhere (from backpacks, rooftops, garbage cans, sewer drains) and, blitzkrieg style, overwhelm even largish targets within minutes. It will take very sophisticated counter measure technology to correctly identify, isolate and attack a sufficiently large part of such a swarm; technology that will not be available at the time motivated amateurs will be able to deploy such weapons. These are interesting times to live in, indeed.