Two recent articles on survivalists: “From the outside, Jerry Erwin’s home … is a nondescript house … But tucked away out of sight in his backyard are the signs of his preparations for doomsday, a catastrophic societal collapse that Erwin, 45, now believes is likely within his lifetime. … Erwin and others like him in the United States and elsewhere see political upheaval and natural disasters as clear signs that civilization is doomed.” (