Flagged: Just churnalism of this blog post from 2021: https://atchistory.wordpress.com/2021/12/05/reminicences-4-c...
Almost sounds like an xkcd what-if thing, but real curious what would result from two jets passing this close to each other at supersonic speeds.
A nice variation on the “LA speed check story”[1]. Perhaps we can call this one “Shanwick Altitude Check.”
[1]: https://theaviationgeekclub.com/sr-71-blackbird-pilot-tells-...