09/29/2009 05:12 am ET | Updated May 25, 2011

After Waterboarding, Sept. 11 Planner Recast As An Asset for CIA, Leading "Terrorist Tutorials"

After enduring the CIA's harshest interrogation methods and spending more than a year in the agency's secret prisons, Khalid Sheik Mohammed stood before U.S. intelligence officers in a makeshift lecture hall, leading what they called "terrorist tutorials."

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