https://m.youtube.com/watch?v=xsmc_rS2jOo

The YouTube video above shows that one of the "hijacked" planes faked hijacking. (Plane that hit the south tower.) Witnesses say the plane was gray with no logo or markings on it. Some say it looked like a military plane. There is also a rumor that the plane could have been a drone aircraft.

Drone aircraft: A aircraft that is guided
electronically to their target without having a pilot.