again -- sorry -- go ahead. >> it's in terms of keeping this, what we believe the sequence of events were. transponder is off. one line of communication is gone. that's why the tower isn't hearing anything. they make the adjustment, recorded by the acars system. it later goes off for some reason. does that give you insight as to whether they were dealing with a situation or did this intentionally? does this help or no? >> does the course change indicate they did it intentionally? >> that they were dealing with a situation they couldn't control like the transponder went off by itself or are systems separate to it doesn't lead you to conclusion? >> no, no. the transponder and course change are completely separate. the course change indicates somebody did that intentionally. it has nothing to do with the transponder, completely separate