criminal law even. they were not reading any of the people their miranda rights, they were gathering them up and sending sme ining them sometime guantanamo bay, nearly 800 of them. what turns out to be in some cases faulty or false intelligence or information provided to some of those troops. in all there were nearly 800, as i said, that were housed at guantanamo bay at one time. 600 have been released. not all were totally innocent. but their crimes were not sufficient enough to take -- to hold them for a prolonged period of time, contessa. >> not at guantanamo bay. some of them were transferred to the custody of their home countries or the like. >> reporter: sort of custody. out in all of them were thrown into a slammer. they were allowed under observation to lead a somewhat normal life. >> so the 172 who remain locked up, what is their status? how risky are they as prisoners if we were to release them or send them back to their home