I think it was just a neat way to end it for the night. I HOPE they didn't skip from 1/1/2000 to 9/11/2001. They can't. It's just a device. They'll go back in time for Mond night.
Who did the photography on this stupid movie?? I got dizzy looking at shots of eyeballs, nostrils, and through every screen, curtain and fence they could find
It was just a few seconds continuation of the starting part and a couple more small interludes, showing Atta, et al, getting on each of the planes.
I was "screaming" "Nooooooooo" when I saw them getting their knives and tie-downs.