ok bigguy, witnesses claim to have seen...about as many different things as there were on witnesses that day in pennsylvnia. we've discussed this almost into the ground at a german forum i visit, and basically, still no general consensus.
one thing about your suggestion..."if" the plane was brought to explosion above ground, or still in the air, they would have been recovering parts, pieces, and bodies, all the way from there to hell and back, and not just have that neat empty "little" hole, that was easy for them to fence off within a couple of miles, and not let any photographers in. this would not have been the case if a 757 had crashed in there, or had been blown up in the air.
to the link from global free press, that was posted earlier, here is another one, that is not just a time line...
http://inn.globalfreepress.com/modul...hp?storyid=323