“Because of a leak, it became known that in July [10] 2001 FBI Agent Kenneth Williams of the Phoenix field office sent a memo to Washington headquarters recommending that the FBI investigate the possibility that Islamist radicals were receiving training at American flight schools. On the basis of his investigation of an Arizona flight school, he determined that one Middle Eastern student there was in touch, perhaps indirectly, with [al Qaeda operations chief] Abu Zubayda, a central figure in the millennium conspiracies.”
– Daniel Benjamin and Steven Simon, The Age of Sacred Terror, Page 347