Here in PA, the only folk who are allowed to display arms in public once a disaster has been declared are CCW permit holders. And they have to have the permit displayed, much like a hunting license. This doesn't mean that some ignorant cop or NG troop might not try to disarm you anyways. In theory, if you stay on your property, you're okay. But again, cops and NG troops aren't known for knowing the laws they supposed to be enforcing in such a situation. They get told "disarm anyone you see", etc, I imagine.
If I'm on my own property, I'll say "I'm not threatening anyone who isn't trying to steal from me", and "I'll go inside now. Don't try to enter my house uninvited". If they enter, they get every loaded mag I've got, bullets first. If they go on their merry way, no problem.
My neighbors would shit themselves if they knew what kind of hardware I have here. Most of them aren't even "hunters", so they probably don't have much. But seeing scary black guns ought to give any of them who are thinking of running wild serious pause.