alt Hacker NewsYou're right! I actually know about the system you're talking about! The US data was classified and Donald Bateman, the engineer behind this and bought the data post Soviet Union collapse.
https://en.wikipedia.org/wiki/C._Donald_Bateman
https://www.flightsafetyaustralia.com/2023/05/don-bateman-en...
the amount of random 'stuff' like this that I've accummulated over the years could fill a book that is interesting only to me lol
Thanks for the link!