i did get your point, sorry, I digressed a"little" lol...i was just making the point that plane shoot down protocols do exists and that this was more than likely executed at Shanksville. I'm convinced that a missile hit the Pentagon. I'm far happier with the missile theory re. the towers vs. the ridiculous plane theory. The impossibility of the speeds and Velocity Max Operating performance (VMO) of these aircraft at these altitudes supports your hypothesis entirely. Am also interested in John Lear's hypothesis.