I see your article mentions this, but I love to highlight this one story:

Strategic air command opposed the installation of these locks. Their stated concern was they would interfere with a launch order, but some think they just resented civilian control.

So they allegedly worked around them. For years, the passcode keeping nuclear war at bay was 00000000

https://web.archive.org/web/20120511191600/http://www.cdi.or...