If there is evidence that this was used as a systematic interrogation of technique, and that this was ordered from above, then the chain of command that this came from should be followed, as high as it goes - even if that means all the way to the very top. That's all that was asked during the Abu Grahib scandal during the Bush years - follow it to the top - who authorized/ordered the techniques? Of course, it's really hard to interrogate a corpse....