My main point of contention is the fact that all the fuel of an airliner is in the wings. We actually see "that" fuel igniting upon impact. But there is a much larger fuel load on the far side of the building. That structural engineering study that many thousands of engineers signed off on, stated without doubt that an aluminum aircraft would never penetrate into a steel and concrete building. And even if it did there is absolutely no fuel in the front half of the plane. So why that huge fireball in that location?