It is one of history’s little ironies that al-Qaeda itself was set up as a JSOC-like group. The main trainer of al-Qaeda in the years before 9/11 was Ali Mohamed, an Egyptian American army sergeant who had served at Ft. Bragg, the headquarters of JSOC. In the 1980s, Mohamed taught courses on the Middle East and Islam at the Special Warfare Center at the army base. During his leave from the army, he trained al-Qaeda operatives in Afghanistan using Special Forces manuals he had pilfered from Ft. Bragg. His life as an al-Qaeda double agent was not discovered until 1998.
Bergen, Peter L. Manhunt: The Ten-Year Search for Bin Laden from 9/11 to Abbottabad. Crown Publishers; New York. 2012. p. 153