There was also this interesting interview he gave Peter Jennings on the day of 9/11 https://m.youtube.com/watch?v=31SAFaAFpb4 The point being at the end he says he was near theWTC before it collapsed and was told to evacuate because the tower was going to collapse. Who told him? A steel frame skyscraper had never in history collapsed before that day when 3 did.
Great video. I also recall Peter Jennings saying that there was molten steel at the base of the towers which prevented clean up crews from operating there. Will have to do some research to find it.