Government authorities say it's "not if... but when"...a moment in the future when, just as it has in the past, some catastrophe sparks mass destruction, leaving humans challenged to find shelter, heat, food, water and defense. If that happens, would you know what to do? Survival expert Rudy Reyes journeys through abandoned buildings showing us some surprising survival techniques, including making fire from steel wool, finding safe houses and creating shortwave radio transmissions.
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