The Second Plane With Pod
This video is self explanatory and is very short and to the point. It clearly shows the pod on the bottom of the second plane that hit the second tower. No commercial airliner has a pod on the bottom. Some military planes have pods for guidance systems.
There is a quote from a Fox News reporter that the plane had a blue logo on the front and had no windows like a passenger jet would have.
The video footage also shows that there was an explosion in the building before the nose of the plane reached the building. See for yourself!