I remember when they flew the Enterprise around the Beltway on it's journey to Dulles back in 1985 and I actually got to see it on top of the 747. This time, though, NASA is not releasing the exact flight plan due to security concerns. It's too bad as it was so cool to see the shuttle flying, even if it was on the back of a 747. I think it was extra exciting too because it was like a real life version of the opening scene from the James Bond film MOONRAKER, minus the disastrous fate of the 747 when the shuttle is fired up and stolen by the bad guys! That was awesome...if totally unrealistic.