Originally Posted by TonyWilliams

Hmmmm....... ATC wasn't allowed to do that. No Cessna would even hear an SR71 on UHF. The SR-71 did not use VHF. Even its UHF was a discrete frequency for the SR. The transmit button for ATC wasn't armed unless they were actually talking to an SR. The altitudes were coded, and changed regularly. Oh, and what tailwind is at 80,000 feet? They didn't spend a lot of time below 60,000.

I call BS on that one (whether its in the book, or not).