I read it, too. Terrifying. I hear from some that the actual physics of it aren’t as bad as portrayed in “One Second After.” I hope not.
My daughter and I were discussing this and just how far the EMP would be effective from the detonation site.
The more atmosphere to go through and the further away, the less damaging it would be.
Could a nuke really get launched from off shore without us intercepting it before it got over land?