A country boy can survive!
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No one survives a continent-wide fire storm - those that are not incinerated will die as all the oxygen is consumed in the days to weeks-long fire storm.
Ridiculous.
I spent 22 years in the US Air Force doing Nuclear Defense. There is not going to be a continent-wide fire. Not even when both we and the Soviets had twice as many nuclear weapons as now.
Please provide a reputable source for such a claim!