entailed the same steps as the 9/11 hijackers: getting flight lessons, purchasing knives, etc.
Other AI-Qaeda Operatives
105. Sheikh Mohammed reported that he provided personalized training to approximately 39 al Qaeda operatives for deployment on operational missions. Bin al-Shibh was one of the 39 operatives trained by Sheikh Mohammed.
106. Sheikh Mohammed stated that Yazid (Sufaat) aka Malik, a Malaysian scientist and a member of the Jemah Islamiyya, was the leading operative involving the chemical-biological (CB) program. Yazid owned a company that provided cover for his laboratory that was dedicated to CB research for al Qaeda.
107. Among the other personnel involved in the 9/11 attack, Sheikh Mohammed stated that Saif al-Adl [a high-ranking member of al-Qaeda's military committee] was not informed of the details until April 2001 but knew the identity of the pilots who had been chosen when the Hamburg cell was picked in early 2000. Walid Muhammad Salih Bm Attash, aka Khallad, knew of the involvement of airplanes in late summer 1999 when he was tasked to survey American airline carriers in southeast Asia. Khallad also
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