the door was not locked. is that right? >> it was not locked and the pilot came back and just before when the pilot buzzed the buzzer to say open the door in fact he dialed back the right -- the correct altitude into the autopilot so, in fact, he had -- he re-set it so the pilot would not be aware, we assume that the pilot would not be aware he had been playing around with it. >> does this suggest there should always be two people inside the cockpit, when one pilot or co-pilot has to leave, somebody else should go in there, based on what we've -- based on the experience of this ill fated flight? >> well that's certainly the most obvious first step wolf is you have to have two people in the cockpit. but one of the indications that the investigators are taking a new look at cockpit security they indicate that as part of this investigation and this tragedy tragedy, they are going to look at the post-9/11 procedures