The ones in Black Mirror could fire shrapnel at people and then other dogs could detect that shrapnel at long-range to hunt down the targets, but I'm not seeing

The ones in Black Mirror could fire shrapnel at people and then other dogs could detect that shrapnel at long-range to hunt down the targets, but I'm not seeing that kind of functionality on any of these dogs. Maybe the USA is keeping that part secret from adversaries, that's smart.