...jet fuel wasn't the only thing burning. Those offices were not empty. Neither were the common equipment rooms that had the feeds for power and communications fed up a shaft from bottom to top. Tons of aluminum and other metals in the air handling system. Just makin the point that there was more than jet fuel on fire there.
Liberals are like a "Slinky". Totally useless, but somehow ya can't help but smile when you see one tumble down a flight of stairs!