I just don't understand how people don't get this by now.
Airplanes are NOT very rigid and NOT intended to penetrate much of anything. The wings of an airplane are NOT that strong (and are, in fact, designed to bend upward, etc…so they're flexible)…
People ALSO do not understand how strong 24 inches of concrete wall can be… it is not at all shocking to think that the wings of a commercial aircraft could maybe penetrate the wall a bit, but pretty much be disintegrated on impact.
The STRONGEST part of the wing is the leading edge… so it's not even that big of a stretch of imagination to think that the wings PROBABLY folded back along the fuselage (with the leading edge being a "hinge" of sorts, and the rear edge crumpling up against the fuselage) upon entering the building, thus failing to leave a wingtip-to-wingtip hole in the building…
People have almost no fucking understanding of SCALE, either… they think the holes should be bigger, the damage should be more, etc…
ALSO, people need to understand that the FUCKING FUEL is stored in the wings, so when it explodes, THERE GOES THE FUCKING WINGS!
Fuck's sake, people…