I refer to ny towers attack

It seems you are referring to the September 11 attacks in 2001, commonly known as 9/11, where terrorists hijacked four commercial airplanes and carried out suicide attacks against targets in the United States, including the Twin Towers of the World Trade Center in New York City. The attacks resulted in significant loss of life and had far-reaching impacts on U.S. and global politics, security policies, and international relations. If you have specific questions or topics related to the attacks that you would like to discuss, feel free to elaborate!