lol...perhaps dear boy they were made of steel? The row of filing cabinets in one pic would have been steel because filing cainets usually are?
Remember the fluid dribbling down the side of the twin towers from the levels where the planes entered the buildings Moggs? That was molten alloy.
Or do you claim both planes flew out the other side ? If a highrise building made of a few internal steel collumns, lots of thin cladding and glass, and a central structure to house the lifts and stairwell's can obliterate 2 passenger airlines in their tracks leaving very little trace of them, especially after an inferno, then why couldn't the Pentagon which is build from stone to withstand an attack? Did you expect the plane to bouce off it and be sitting on the lawn with a scratch on it's nose cone?
