I used to volunteer at the VA hospital in SF. There I attended to a guy about my age who was in for chemotherapy.
He told me he was a member of the unit we've all seen in trenches in front of the nuke blast in the desert. He told me that all the movies of the different tests were the same unit, the same bunch of guys. Knowing how grunts were back then I said, I bet you guys were bugging your sergeant to get closer for the next one. He lit up and laughed and told me I was exactly right, but they wouldn't let them get any closer no matter how much they pleaded.
Then we talked about the possible connection to his cancer - he said he could never be sure.