Great Video! Could the Planes have brought down the twin towers, but not because of the impact! Because they are made of Aluminum!

THis was a great video and made me think about something I've never thought about with the 9/11 towers. Many engineers have clearly shown that the impact of the planes alone wouldn't have brought these buildings down. Even with the heat of jet fuel, it would take a lot longer to burn before they came down. But what if we had an answer for why firefighters inside during the rescue kept hearing explosions and the same for people on the scene that day? Could melted aluminum from the aircraft be the cause of these explosions and what brought down the towers? THis is a must watch video.