Knew/know several pilots who flew the Blackbird. The SR's stationed at Kadena AB, Japan were called "Habu's" after the local deadly poisonous snake! Plane leaked fuel like a sieve while on the ground; sealed up tight once airborne with a little speed and heat on it's titanium wings!
When asked (even in the club after much whiskey being consumed!!) about it's performance; the only reply was "Faster than Mach 3 and higher than 60,000 feet!!"
I can tell you that I saw a picture of two men playing chess, taken above Mach 3 and above 60,000 feet, in Moscow Square!! Detail was fantastic; one player was getting ready to lose badly!!! Great plane, and pretty darn good cameras!! FTRPLT