CNN's Chief Medical Correspondent Dr. Sanjay Gupta breaks down what to do when tornado hits

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exp point gupta tornado_00004330.jpg

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What to do if tornado hits 02:58

When a monster tornado is headed your way -- the wrong decision could kill you, and there's usually not much time to react. CNN's Dr. Sanjay Gupta breaks down what you should do in the important moments right before a tornado hits.