9/11 Truth Search: Planes didn't take twin towers down

On 9/11, the world watched as two airplanes crashed into the twin towers of the world trade center, both of which collapsed shortly after. This much we know for sure, but for some, the cause of the collapse is still not so clear. Michael T Donly is a part of a group that says the two planes that hit the WTC twin towers could not have destroyed them.