Not to mention that it burned at a high temperature for several hours. That would take care of most of the airplane. Good luck seperating the metal
from the plane from the metal from the building after that fire was out.
But, for those who are not convinced... I am sure that the space aliens beamed most of the evidence out just so that you would have something to look
into.
there are actually several security camera views of it. I'm in the Washington DC area, and have seen a few of them that show the FULL plane going
into the building (and yes, from all angles). They even showed it on the news here. You can even see the lights being knocked down by it. Of course, I
do not have them on a link, nor on my computer. This was a while ago (year or 2).