The thing I like about this series is how it's grounded in reality, scientifically speaking. I know it's not very likely that terrorists could sneak in a dozen nuclear warheads and set them off at the same time in major cities across the US, but this is fiction and you have to suspend disbelief. Dealing with the reality of what happens after a nuclear blast is well done in this episode, but does go just a little over the top. Protecting yourself is absolutely neccessary, but plastic sheets on the windows isn't going to help at all. Going down to a basement and surrounding yourself on all sides with concrete is a good idea though. The mine was an excellent idea, but I think I would have asked if that entrance was the only source of air. I'm not a miner and if someone out there is, please correct me.
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