It was so secret that 10 minutes ago you claimed it never took place, your words are still posted in this thread. But you are learning, you are now willing to admit that I was right, and that the flight DID take place.
It only had to be cleared by the FBI, and counter terrorism csar.
The President and Vice president didn't know about it
The media didn't know about it
It was so secret it was labeled as a "conspiracy theory" after 9-11, something that "never took place"
The very first confirmation of the flight was when Richard Clark confirmed it to the 9-11 commission.
But no ...it wasn't a secret, nope.
Like I said, get a dictionary honey.