They used to be, but no longer. If it comes to a scenario like that, the demonic ones will have fleets of millions of drones, monitoring every inch of the earth's surface. Already if you are in a house or outside, they know who you are and what you are doing. Underground used to offer a better escape, but now even that is sketchy, because of methods of "seeing" down there. Gotta be 100 feet down to actually have any security methinks
Somewhere, Laura Bush is cringing.