I've recently stumbled into a number of very long (many hours in two or three parts each) documentaries on the history of U.S. nuclear weapons development, command, control, security, and policy on the Sandia National Labs #YouTube channel.
Sandia is one of the big three U.S. nuclear labs, the other two are Los Alamos and Livermore.
The documentaries I've seen so far were produced by Sandia around 2005 and 2010, with a vast number of interviews with the original persons involved both in terms of engineering, military, and government.
They are remarkably frank at discussing the many drastic errors made along the way and the many problems that have occurred. You come away with the feeling that it's a miracle that there wasn't a nuclear war or unintended nuclear detonations (and they do cover the bad accidents that did occur).
Worth your time if you're interested in this area -- I learned a lot that I either didn't know or hadn't been able to put together into a coherent understanding until now.
Do you mean the series that starts with https://www.youtube.com/watch?v=Qz0Dg5gIjhw ?
@robryk That's one of them. There are others too. Just look through the uploaded videos list.