if you believe that a plane brought down the WTC towers then you are sadly mistaken. Those towers where designed to withstand 2000% of the intended weight design. Why was sulphur and iron found on the scene, byproducts of THERMITE. Jet fuel only burns to 1700F whereas the steel used in the towers melts at 2700F, Jet fuel CANNOT melt steel. THERMITE however burns to over 3000F.