Well, I don't have a cockpit photo, but I do have a shot taken of my jet from the outside.
This is up at Tonopah, Nevada back about 7 years ago, test-dropping a bomb for the Department of Energy.
My speed through the traps was 683 KCAS at 500' -- it was just over the Mach, but I don't remember exactly what M number. No wicked jetstream tailwinds here, just raw thrust pushing the jet that fast.