In April 2002 the CIA had captured its first important prisoner, Abu Zubaydah, who was transferred to a CIA black site and at the suggestion of psychologist James Mitchell the CIA embarked on interrogation methods which included sleep deprivation using bright lights and loud music—still prior to any legal authorization from the US Justice Department. Later that April Dr. Mitchell proposed a list of additional tactics, including locking people in cramped boxes, shackling them in painful positions, keeping them awake for a week at a time, covering them with insects, and waterboarding, a practice which the United States had previously characterized in war crimes prosecutions as torture.