Below are screenshots of the first video here:
It is my understanding that this is an animation of NIST's Flight 175 / WTC2 impact analysis, still pictures of which were posted earlier at this blog.
I'm posting these for physicist "hsgsj", with whom I am engaged in argument about whether these images are physical, starting at the bottom of the below 911blogger page with the comment "Good thing this is not baseball. Strike five":
I think I'm still swinging, with one strike against me because he is correct that I misinterpreted the NIST report on tail deceleration.
Click for a larger view.