@bojacobs@histodons My father saw two atomic bomb tests, one while he was in the navy in the early '50s, the other from Hawaii in the early '60s.
He was part of a group of sailors from Camp LeJeune trucked cross-country to Nevada, stood in ranks, the bomb exploded miles away in front of them and they were trucked back to NC.
The test in the '60s was on a faraway Pacific island, and visible only as a flash across the evening sky. I believe it was the one that produced the first EMP event.