PHIL JAYHAN has been a 9/11 researcher for over a decade, having helped produce the 9-11 documentary Loose Change and responsible for independent research leading to the 'Hollow Towers' theory of how and what happened to the Twin Towers on 9/11. Phil also runs the Lets Roll Forums, where he encourages everyone to join, observe and participate with the end goal of sharing research, opinions and information on 9/11.
Youtube film producer James Easton has a great video on the Hollow Towers theory presented here with link.