[Steel Wolf]

I've been jumping out of military jet aircraft for years, and I can feel the difference between every 20 knots of increased speed. The hardest I've ever felt seemed like a full body punch, and that was at a tiny tiny fraction of Mach 6. I've never seen the numbers, I can't imagine anyone even surviving an unshielded bail out at Mach 1. It would be like being struck by an invisbile wrecking ball at full swing.

[11B3]

All modern fighters can be punched out of at Mach 1+. Even the early MiG-21s were capable of it. But you're definitely correct - that wind blast would be tremendous. (That's one of the reasons for that ring you see above the pilot's head in a fighter. Prior to eject, that secures the head and neck so the wind doesn't twist it.)

150 kts combat AGL is about the limit for ground troops to deploy, right? (HALO being much different due to the altitude.)