The Dow has hit 20,000 for the first time ever, but rather than celebrating, some of the richest of the rich are building bunkers to prepare for a potential apocalypse.
These "preppers" are making other investments too. They're buying houses in New Zealand, which has become a popular spot in case of calamity. Billionaire Peter Thiel just secured property and citizenship there.
And they're getting elective surgery. Steve Huffman, the 33-year-old co-founder and CEO of the online community Reddit, got Lasik so that he'd be able to be more independent in case of emergency.