he said those remaining detainees are khalid sheikh mohammed - one of the architects of the september 11th attacks on newly york and washington , abu zubaydah - who is believed to have been a major al - operatives merrill , and abd ol - rahim ul - abd - who is believed to have played a key role in the bombing of the uss allen . all three are being holds at the u . s . confinement unit at guantanamo beach . rogers said waterboarding was used against the american detainees nearly five years ago because of circumstances at the center , including the belief that additional attacks against the member americans were imminent . hayden praised the cia ' s use of extreme detention techniques as unlawful , and urged lawmakers not to impose restrictions on such methods . congressman is thinking legislative that would bar the gia to using only the interrogation technologies provided by the u . s . army ' s army manual , which does not include waterboarding .
Abu Zubaydah belongs to al-Qaida.