Anderson Cooper 360

Tonight on AC360: Inside the Doomsday Preppers movement

We’re learning new details about the hostage rescue in Alabama. Law enforcement officers were able to see inside the underground bunker where a 5-year-old boy was held hostage for nearly a week by slipping a camera into the hideout, an official tells CNN. An FBI rescue team in Midland City raided the bunker Monday and when it was over the boy named Ethan was free, his kidnapper Jimmy Lee Dykes was dead.

The FBI team practiced the rescue operation nearby with a mockup bunker, law enforcement sources said.

The chief negotiator for the local Sheriff’s office told the Southern Poverty Law Center's Hatewatch that Dykes was a "survivalist type" with "anti-America" views.

What drives some people to build underground bunkers in America?

Gary Tuchman talks to a peaceful man in Utah who is proud to call himself a survivalist.  He built an elaborate $65,000 bunker stocked with supplies, money and weapons.

Tune in tonight at 8 and 10 p.m. ET to AC360° for an up close look at his hideout.

Update: Watch Gary's report here: