Doomsday Preppers - Season 3 (2013)

The possibility of World War III is a major concern for many preppers, including former Marine Alex Dunbar, who is training a private army of German Shepherd attack dogs in San Luis, Colorado. In the woods of East Appalachia, Brenda McSwigan fears that a vicious mutating virus will lead to a pandemic that will overwhelm hospitals and leave the rest of the country in chaos. Another prepper, Grace McLeod, secures her 3,500 square-foot fortress before an economic collapse.

Prepper Curt banks on a remote lake, technology, and his children to save the family from Doomsday.

Prepper Chad believes that a nuclear strike resulting in a genocidal siege is a real possibility. At his home in Arizona, he is working on executing the biggest prep of his life -a 140-foot-long escape tunnel from his family's house to a bug-out vehicle. With the help of his wife and daughter, he begins construction. But as the project unfolds, they realize they're in over their heads.

While many preppers believe defense is the best strategy for surviving a Doomsday scenario, one family in Tacoma, WA, is banking on a good offense. Tyler, his wife, and his cousin have assembled a group of like-minded, would-be marauders from their neighborhood in preparation for a catastrophic domestic terrorist attack. They have only six months' worth of food because they plan on taking what they need in order to survive. And to stay safe, they're developing the ultimate suit of armor.

A devastating EF-5 tornado can throw entire buildings into the air and hurt hundreds of people in its path. Prepper Tracy has spent six years getting his Tennessee farm ready for a super tornado strike, but he doesn't plan on hunkering down -- he plans on gathering his family and making a swift getaway in his mobile safe room.

Rob has most of his Prepper boxes checked, but has one last task to crown--the ultimate booby-trap.

In Dayton, Texas, John Tucker is preparing for category 5 hurricanes that will change the landscape forever. Around town he is known as the bee man but what people don't know is that John Tucker is planning to use his bees as the ultimate prep.

Preppers take to the roof and deep underground to protect their families from Doomsday.

From fortified pillboxes to mobile pharmacies, preppers ramp up for fundamental destruction.

Two Tennessee families show how they are preparing for a potential catastrophic earthquake along the New Madrid Fault line.

From foreign occupation, to cyberattacks, preppers buckle-down for the ultimate American Doomsday.