First in order to have a fireball, the fire needs oxygen to ignite the fuel. Now, seeing the WTC video, you will notice that flames exploded away from the buildings. This occured because there was sufficient oxygen outside rather than inside the building. Seeing the flames from your vantage point proves that there was not sufficient oxygen inside the building to fire the fuel and provide the catalyst for sufficient heat to melt the steel girders holding up the WTC.
If oxygen was available inside the building, it would have exploded out the windows rather than smolder and create thick black smoke. (Ever seen the movie Backdraft!) Now, please explain in your own words to me here on this forum how such an unlikely event as a plane hitting a tall building would cause the building to collapse in on itself like it was being imploded. And, if you have additional time, explain how just such an event could happen twice at the same place and at the same hour when the facts clearly show that the buildings although identical in construction were not hit in the same, identical place on their exterior skin. And while you are at it, please explain how the second building hit was the first to go down methodically down I might add. Have you ever witnessed an implosion like those hotels in Las Vegas?
This has been reported several times on most of the major news stations. I'm surprised you missed it. If you have an alternate explanation, please present your evidence and the credentials of your source.
BTW, if they had bombs planted why did they go to the risk of hijacking airplanes?