Throughout human history, doomsayers - people predicting the end of the world - have lived largely on the fringes of society. Today, however, the doomsday industry is thriving, thanks to TV shows, movies, hyperpartisan politics and the news media. With the country's collective anxiety on the rise, even the nation's wealthiest citizens are jumping on board, spending millions of dollars on survival readiness in preparation for unknown calamities. Thomas Morton sets out to see how people across the country are planning to weather the coming storm.