John Leso
John Francis Leso (born August 13, 1966) is an American psychologist and a major in the United States Armed Services, who is reported to have aided interrogators at Guantanamo Bay detention camp. Leso co-authored an October 2002 memo which "recommended physically and psychologically harmful and abusive detention and interrogation tactics", which were used on Mohammed al-Qahtani, the alleged 20th hijacker.