is actually over at Freethoughtblogs. Please have a look.
A former engineering student, on seeing film of the World Trade Center towers collapse on September 11th, 2001, indicated surprise. He told a friend that he would have thought that on being hit with jumbo jets, the two or three immediately affected floors of the tower would have been destroyed but the structures would probably remain standing, or at most the floors above the impact sites could possibly collapse due to melting support beams but the lower floors would stand. The complete collapse, above and below the impact sites, of both of the structures was a surprise to him, given his engineering training.