goes, it's back to doing the forensic analysis of the pilot simulator. hopefully they grabbed his printers, computers, anything with a hard drive. you obviously want to do a thorough interviewing of the family members and whatnot. again the passengers. i know they came back and said we did a cursory check of everybody. what that means to me as a former investigator, they took the names, ran them through some data bases, everybody cleared. that's fine. then you got to go another level deeper. start interviewing the family members of the victims and friends and start working in reverse and doing a true assessment of each individual on that plane. >> right. just in case the pilots acted but under duress from potentially a hijacker who would have been onboard. i want to go through the actual working theories that we have. there are a few of them. there's hijacking. there's mechanical error. there's some sort of act of god. high l pilot suicide. terrorism. i want to ask each of you, based on what we know now, obviously not a tremendous amount, which of those theories seems the most plausible at this point. >> we have the possible, the probable and the crazy. i think -- i think we've pretty