[cynwoody]

I couldn’t find that link in my 1971 463X0 Tech Training at Lowry, AFB, CO.

That's not surprising, given the internet's precurser ARPANET was only invented in 1969, and the internet wouldn't really lift off until about 1994.

However, googling that 463X0 code you mention leads to a minor Cold War story:

https://usafnukes.com/break-room/bios-a-wsa-stories/201-gary-bridget-my-day-as-a-firefighter-lowry-afb

"Certain characteristics of the W-87 warhead were classified," it says. ...

[G Larry]

Cool!
Thanks, I was all set to create an account....until I saw the price tag.

Yes, I didn’t think my 1971 link reference required a sarc tag....