This September 2002 email chain discusses medical coverage and setting up for interrogations, which includes having James Mitchell and Bruce Jessen ready to do an initial psycholohical assessment so that they can get waterboard approval and employ interrogation methods. The September 19, 2002 email states that the psychological assessment must be "defensible", meaning that the psychologists must determine that the detainee has no psychopathological condition that precludes it form interrogation measures that were approved for use on Abu Zubaydah.