![dek](https://content.time.com/time/photoessays/2009/911_plotters/911_plotters_4.jpg)
Mohamed Atta
Mohamed Atta, 33, was a student in Germany during the 1990s. Atta led the Hamburg, Germany, cell that led the 9/11 attacks. The Egyptian-born radical hijacked American Airlines Flight 11, the first plane to strike the World Trade Center.