My preference is that they hit a relatively remote island in Hawaii. Unless an EMP is DEMONSTRATED nobody will believe it’s real. They simply won’t...and our systems will not get hardened.
We’ve already made the decision to let Iran and the Norks go nuclear - we might as well start defending ourselves against the results of that policy.
The US government under this president is not in the business of defending its citizens. I’m afraid that EMP defense is up to individuals.