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Freeze dried meals and emergency food rations, which are a staple of preppers, fill the racks at Grandma’s Country Foods in Sandy, Utah, December 10, 2012 (Credit: Reuters/Jim Urquhart)

Freeze dried meals and emergency food rations, which are a staple of preppers, fill the racks at Grandma's Country Foods in Sandy, Utah, December 10, 2012 (Credit: Reuters/Jim Urquhart)