Some of the more lurid revelations of DIA's alleged harsh interrogations came from FBI officers, who conducted their own screenings of detainees in Guantanamo along with other agencies. According to one account, the interrogators of what was then DIA's Defense Humint Service (referenced in FBI correspondence as DHS), forced subjects to watch gay porn, draped them with the Israeli flag, and interrogated them in rooms lit by strobe lights for 16–18 hours, all the while telling prisoners that they were from FBI.