Shehri arrived in the United States in April 2001 on a tourist visa . On September 11 , 2001 , Waleed along with his brother , Wail , boarded American Airlines Flight 11 and was one of five that helped hijack it , so that Mohamed Atta could fly the plane into the North Tower of the World Trade Center
American Airlines Flight 11
American Airlines Flight 11
Waleed al-Shehri