Yep, they know the same secrets that terrorists do, sadly, which is that the element of surprise puts people at a disadvantage.

I'm certain they were targeting y'all for some reason. I'd do some serious looking into what that reason might be and re-evaluating of any inventory, evidence, business transactions or associates you might be doing business with. Not sure how big some of the fish you interact with are or how big a municipality you live in, but plenty of the drug task forces have fairly far-reaching tentacles. This could easily have been your wake-up call before some sort of big bust or set-up happens. As much as people love and are devoted to cannabis, the stuff's not worth losing your long-term freedom over.