Before GPS got hyper accurate and cheap I’d have multiple light aircraft and airliners ask their ground speed a day. I think it’s been maybe 5 years since somebody asked for their ground speed now. Nowadays airliners and private pilots know exactly how fast they’re going.
The SR71 is badass but there is a bigger classified fish in the pond. I’ve got friends who worked Air Force in Europe and they routinely would track a target heading towards Russia at Mach 5+. No beacon so no altitude information, my guess is lower space (100,000 feet or above).
Not surprised, it was years before the Blackbird was ever acknowledged.
Here’s another humorous SR71 story
Great story!
Someone’s comment, how true.
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