Can you get a permit to carry on National parks/lands?

I live in the mountains in NC right along the Blue Ridge Parkway. I love to go hiking all around the parkway but it's pretty much all run by the National Parks Service. Does any kind of permit exist that would allow me to legally carry when I'm hiking to protect myself from crazies in the woods or heaven forbid a bear or coyote? via /r/CCW http://ift.tt/2rlZBur