Phoenix dad Tim Ralston is prepared for an EMP attack on America. Jason Charles is a New York firefighter, preparing for the eruption of the Yellowstone super volcano. Pat Brabble is a church-going Southern gentleman with a twist: he believes our country is on the brink of hyperinflation. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Get more Nat Geo Full Episodes:    • National Geographic Full Episodes   ➡ Get more Nat Geo Wild Full Episodes: https://www.youtube.com/watch?v=qAG2SkTPltw And check out more National Geographic series and specials here: ➡ Disney Plus: https://www.disneyplus.com/ ➡ Hulu: https://www.hulu.com/welcome ➡ NGTV app: https://www.nationalgeographic.com/tv/ ➡ ABC app: https://abc.com/ #FullEpisode #DoomsdayPreppers #NationalGeographic Get More National Geographic: Official Site: http://bit.ly/NatGeoOfficialSite Facebook: http://bit.ly/FBNatGeo Twitter: http://bit.ly/NatGeoTwitter Instagram: http://bit.ly/NatGeoInsta TikTok: http://www.tiktok.com/@natgeo Tenor: http://on.natgeo.com/31b3Koc About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. Back to the Stone Age (Full Episode) | Doomsday Preppers https://www.youtube.com/watch?v=U1q99Wr6nE0 National Geographic null