CNN in the U.S. is now saying that the pilots housed in Florida who are thought to have flown the jets into the WTC towers and Pentagon had previous Saudi addresses, and that they were in fact either Saudi air pilots or trained by Saudi air. They had addresses in Jeddah.
This information is HIGHLY speculative.
Does anyone care to venture a guess as to the speed at impact at the WTC? It looked to be extremely high - certainly over 400 knots. The audio from eyewitness tapes sounds like full throttle.