Some interesting points but let's keep it friendly.
1. The missing personnel is a real compelling argument.
2. The fact that the craft penetrated to the third building would eliminate a smaller aircraft other than a hardened cruise missle. No commuter jet. I recall seeing films of the second WTC craft and it penetrated all of the way through the tower, poking out the opposite side.
3. People inside the pentagon would probably be the worst witnesses. I believe they said they knew "something" happened and thought it was a bomb.
4. I believe the fire was so intense that they couldn't really get to the site for jours. That would advance the airliner theory.
5. I believe the black box was found.
6. As for sound, a missle has the same or similar propulsion as any other aircraft. Agreed that down stream the only thing heard would be the air turbulance. However, those upstream would have also heard the engines and looked up to see :wassup". God knows I know what "missles" sound like, to the tune of over 1500 per day at Khe Sahn.
7. Most "eyewitnesses" are unreliable under such circumstances. How many times do you hear someone describing how he heard a loud explosion and looked up to see a plane exploding? This account was repeated several times in relation to the crash off the NJ coast. It is impossible for that sequence to occur based upon the relative speeds of light and sound.
8. One interesting shot was that of a circular hole punched through a wall. It must have been faked to look like a missle strike.
I didn't say I was convinced but interested.