I ran across this somehow today. At Ready America there is a detailed explanation of what you should do should you find yourself in the vicinity of a nuclear blast.I’m not kidding.
The site gives advice like:
During a nuclear incident, it is important to avoid radioactive material, if possible.
And there are pictures:

Consider if you can get out of the area.
It’s good to have pictures with our manuals.
Are you taking notes?
We should alway have a plan. You know, take action and do something when we find ourselves in a, in … ah, well, in …. hmmm ……… uncomfortable circumstances.

Something like… RUNNNNN!!!!!!!!!
AubreyJ………
That’s right aubreyj — RUN LIKE YOU-KNOW-WHAT!
our tax dollars at work
AubreyJ left out the important part, “and pray real LOUD!”