At first sight this is an extraordinary prediction. However with hindsight it is not so unusual. The height of the towers and their proximity to several large airports made them prime targets. What I found extraordinary was the way the towers colapsed. However I have seen a number of structural engineers giving their expert opinion on television. It would appear that a 175 ton aircraft with some 45 tons of fuel on board and two large ignition sources (the engines) flown in to the towers would cause structural failure from the top down. Incredible.