Atta and the other hijackers began to work on appearing normal, shaving their beards and avoiding known radicals. Starting in 2000, the CIA placed Atta under surveillance in Germany. He was trailed by CIA agents, and was observed buying large quantities of chemicals. [5][6][7] When he entered the United States in June 3, 2000 the CIA says its surveillance of Atta ended. It is unclear whether the FBI or some other inteligence agency monitored Atta's activities in the U.S.
http://en.wikipedia.org/wiki/Mohamed_Atta_al_Sayed
That book Terror Timeline By Paul Thompson looks good, is it a Bush bashing book?
Say that three times
Bush bashing book
Bush basing book
I am being goofy today!