Doomsday

Meet two families who both fear the end of the world is fast approaching. In Texas, John Tucker and his family are preparing for Category 5 hurricanes that they believe will change the landscape forever. After living in a home that was split in two during a hurricane, John vowed he would never again be unprepared. And in Utah, brothers Bret and Shane are preparing for a complete economic collapse. To protect their families, they are building a sniper post complete with the ultimate sniper rifle.

To protect his family from Doomsday marauders, Rob is devising the ultimate booby-trap system. He's securing his Texas property's perimeter with an elaborate system of alarms, traps and defense mechanisms. In Tenn., Greg is preparing for a financial catastrophe by building an invisible tree house where he hopes to be safe from looters. If the build goes as planned, his family will have a tree house 12 feet into the forest canopy, with mirrored paneling and a stockpile of food, water and ammo.

A devastating EF-5 tornado, like the one that struck Oklahoma in May of this year, can throw buildings into the air and hurt hundreds of people. In Tennessee, Tracy is preparing for just that. Tracy has spent six years prepping his farm for a super tornado, but if it does hit, he doesn't plan on hunkering down — he plans on gathering his family and making a getaway in his mobile safe room.

While many preppers believe defense is the best strategy for surviving a Doomsday scenario, one family in Tacoma, Wash., 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.

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.

Deep in Oregon's backcountry sits an 80-acre off-the-grid estate that prepper Curt and his family have designed as a fortress in the event of an economic collapse. Isolation is one of their greatest strengths, but the protective measures are endless: a 3,000-square-foot greenhouse, a lake with 1 million gallons of water, infrared cameras and a high-tech software system — not to mention the children are trained in marksmanship.

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.

Could an explosion on the surface of the sun cause mayhem on Earth? Jason and Jacob are a father-son team from Alabama who are prepping for exactly that: a global solar flare with the potential to wipe out power grids around the world. Jason was almost stranded for good in the wilderness when he was 19, but that will not stop him from prepping in those very same woods by molding his own ammunition and preparing his 20-piece bug-out pack.

An economic collapse could mean total chaos for the U.S. -- looting, riots and civil unrest are top concerns. In Washington state, Steve works with a stern hand to prep his family for the potential threat. South Carolinian David Appleton is a comedian, but the idea of a devastating earthquake is no joke to him. His job doesn't always pay the bills, so David must Dumpster dive to find supplies to make a DIY camouflage net to hide his preps.

Some preppers believe in safety in numbers -- as is the case for Jeff Mann, who leads "the Colony," a community of 25 preppers unified with the single purpose of surviving doomsday. Watch as he prepares his son, Colten, to take the reins by having him hunt down live boar in the Florida swamps and builds the Colony's very own gallows -- an important message that there are laws to be upheld, even in times of chaos.

Meet Craig, a proud Alaskan living in the woods of Fairbanks, fearing the collapse of the American economy. He's secretly built a bug-out dome, designed by friend and prepping partner Don. Accessible only by boat, the dome will serve as a refuge for his wife and two daughters. Then we follow David, a new age spiritual prepper from Hawaii, who fears a catastrophic tsunami will strike the island but has prepped with his girlfriend to bug out to the top of a mountain.

Prepping for an economic collapse, Jeff is converting a decommissioned missile silo into the perfect bug-out getaway. But that's not all Jeff is focused on. With an online dating profile, he is also searching for a special someone who can share his love for prepping. We'll see Jeff, a bachelor on the lookout for love, not only work on his bunker, but also go on multiple dates to find his prepper mate. We also meet Doug, who lives in the mountains of Tennesse and is known by locals as "Rockman".

Former firefighter medics John and Kelly are motorcycle riders living on a prepping homestead in the mountains of Virginia in preparation for a total economic collapse. Frank, who owns a construction company in Maine, spends his golden years flying his private plane and preparing for the upcoming economic collapse. Finally, we meet mobile prepper Brian as he prepares for his fear: a terrorist attack.

Doomsday Preppers visits the household of Amanda Bobbin, who began prepping after being warned in her sleep of imminent danger. These days Amanda and her husband Scott spend their time hidden away in the mountains, where they practice sustainable living to prepare themselves in the event of a comet hitting the earth's atmosphere.

Not all preppers are relying on their nuclear family to survive the end of time; to some, creating a tight-knit community of like-minded individuals is the difference between death and survival. Guided by his intuition and his Apache heritage, a prepper known as “Snake Blocker” is convinced a coming economic collapse will result in social chaos.

Businessman by day, prepper by night. Brent lives in fear of an electromagnetic pulse (EMP) that will make the world go dark, leaving his family of 12 with nothing. To prep for life after the EMP, Brent has constructed a medieval-style castle that will serve as the ultimate bug-out fortress. Derek runs a Wild West theme park and fears that a solar flare will hit earth's atmosphere. He and his family use their amusement park as a secret prepping oasis, where they can practice strategic defense.

Brian Smith has big plans for the end of the world.The father of 12 is preparing for a total collapse of the U.S. monetary system and fears that the world's food supply will become scarce. He has stockpiled a year's worth of food, in addition to his recently acquired 47 acres of land in an undisclosed bug-out location, where he plans to grow his own tobacco and sugarcane.

Follow three New York preppers as they plan their bug-out to escape destruction from natural disasters.

Bob Kay, a nutritional scientist in Southern California, is prepping for environmental destruction due to massive earthquakes; Ryan Croft is prepping for a global financial crisis by cultivating alternative food sources like earthworms; politician Josh Wander is preparing for a terrorist attack, stocking up kosher foods and teaching others about prepping.

Jeff Bushaw plans to fly his family to safety following the eruption of the Yellowstone supervolcano; Allen and Franco have built sustainable food production systems in preparation for worldwide food shortages; John Adrain has invented numerous security gadgets to turn his estate into a technological fortress safe from a wide range of disasters.

A single dirty bomb could cause massive chaos. Tom Perez is prepping for a terrorist attack and suspects it's only a matter of time before one gets through our defenses. He has not worked in 12 years because he spends most of his day prepping and spends much of his family's yearly income on preps.

At some point, we've all wondered what will happen to our economy. Jay Blevins has probably thought about it more than most. He is a former law enforcement officer who is preparing for a global economic crisis. He fears that social unrest will erupt and has found creative ways to protect his family, including his own recipe for homemade pepper spray.

Meet Jason Beacham, a 15-year-old boy from a small town in Missouri who has been prepping since age 11. Jason fears anarchy following economic collapse. Big Al is a musician based in Nashville, Tennessee, who has a secret bug-out location in the mountains of the west. He fears a nuclear attack from Russia. Braxton Southwick is a former professional racer who lives with his wife and their six children in a suburb outside of Salt Lake City. He is prepping for a biological terrorist attack.

Some American families have drastically altered their lifestyles in order to survive what they fear will be the end of the world. Johnny O fears a terrorist attack on nuclear power plants, and his prepping philosophy is always having backups for your backups. He is a husband and father of two who lives with his wife and his wife's twin sister, who also knows their bug out plan.