The twin towers were constructed so that a plane could not possibly take them down. Never in the history of tall buildings has one ever collapsed because of fire.

The Empire State Building was struck by a bomber, and the plane just stuck in the side of the building. Construction people removed the plane and patched up the building, which is still standing.

There's no way that planes took down the twin towers. It doesn't matter what the planes were made of, what they contained, how fast they were, or even if they were just holograms. The towers fell from a controlled demolition.