And he became a disciple of Osama bin Laden. In 1997 Atta enrolled in a training camp of Al Qaeda in Afghanistan, where he was trained in terrorist techniques and apparently singled out for leadership. Returning to Hamburg, he shared an apartment with Marwan Al-Shehhi and Ziad Samir Jarrah, both of whom joined him as suicide hijackers on September 11. For Atta, the World Trade Center–a skyscraper and a symbol of Western culture–must have been the perfect target.