Well, technically speaking if there isn't anyone signed up with BDUs and a rifle in hand, then your liberty would be in peril. I mean, if the US government and her lands were just up for whoever wanted to call dibs, I'd take it.

That said, it stands to reason that the reason why your liberty isn't imminently in peril is because someone is already signed up and out there defending it.

To restate everything in broad terms: there's lots of people out in the world that don't like us. Your liberty is always in peril.

Do you want a totally anarchistic society, perhaps? I, for one, don't.