Hi Ned,
I have a friend who is in the airforce, and durring training they were thought that if they needed to disable, but not destroy weapons they could burn them with jet fuel. It would melt out the soft metal and leave the frame of the weapon relatively intact. The towers collapsing from burning jet fuel seems a bit suspicious. I'm not big on the whole conspiracy thing, but it seemed like almost an over-effort was made to show how the towers could fall right after 9/11. Does anyone else remember the constant bombardment of TV documentaries in the months that followed 9/11 that explained how the jet fuel would fall through the building warping and weakening the structural integrity of the towers until the fell? Anyway, my point is that due to his airforce training my friend has become rathe skeptical of jet fuel's ability to take down the towers.
Brad