Narrator: Doomsday prepping isn't a new idea. In the '50s and '60s, houses were built with bunkers, and shelters started popping up during the Cold War. Today's preppers have plenty of survival ...

An curved arrow pointing right. Aaron Fletcher has been preparing for doomsday for 15 years. See how a nomadic shepherd thinks everyone will have to live in a post-apocalyptic world. More from ...

‘Preppers’ believe that the end of the world could be right around the corner NatGeo's hit series Doomsday Preppers returns later this month with more stories about this ever-growing group of ...