note no what they call good-bye note. >> he could have been driving to the airport to go to work and gotten a phone call that said it's over, not seeing you anymore, that could have added to the mental situation he would have already been in. >> but we'll have to hear more about this medical condition because it's a persistent condition. he didn't catch a cold and go to the doctor. they're talking about multiple notes over a longer period of time. what kind of persistent chronic condition did he have? >> they're saying now it was not depression. there could be obviously a lot of other causes. but depression -- you heard that report from will ripley that depression is apparently not something he was suffering from. >> and the investigators so far have been very careful about putting out information. for instance even in the very first press conference, they indicated it was not a decompression event. they gave us hints. so i think here they're trying