Doomsday Preppers: Season 1, Episode 7

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Meet three people who are desperately preparing for a great worldwide catastrophe. Doug Huffman has built spider holes in the Sierra Nevada Mountains to survive the next Great Depression. Dianne Rogers preps her family to survive an environmental catastrophe, even going so far as to train her 6-year-old daughter to bug in. Ed and Dianna Peden are living underground in a missile silo bunker equipped with a large greenhouse, alternative energy, water catchment systems and protection.