It's every single department, in every single city, in every single state.
That's thousands, if not tens of thousands, of departments buying these when they'll all be useless as soon as Apple patches the exploit.
Seems like a whole lot of wasted money. But who knows, they might just catch enough "big bad Marijuana dealers" to offset the cost.
That's what the LEO really means by cold cases. Nothing important. Just more drug busts.