So have you Bruce or anyone else here seen the Unsolved Mysteries show with Dennis Farina? the one with Florence Shaffner shown and interviewed? She does an updated composite sketch saying the originals are not accurate. The one she does shows a much tougher looking DB Cooper. And he acts a a bit tougher according to her than portrayed in other shows? I wonder why that sketch is not used? First time I believe I saw it? And like others one of the investigators speculates that he may have had enough to survive if he only had a knife and a cigarette lighter to start a fire. We know he had both.
I have no definitive answer on why the FBI did not take Flo' 1980-era sketch more seriously. But we can ascertain some plausible reasons based on what we do know.
First, Flo became increasingly less reliable in the Bureau's eyes due to her "emotionality." Galen Cook says he talked with Larry Carr and Cutis Eng extensively on this subject, and that is the perspective he got from those two agents.
Secondly, the FBI was losing confidence in all of the witnesses by the mid-1970s, according to some of the 302s we've been reading recently.
Lastly, Tina and Bill's input became more important over time because they had spent so much more time with DBC than anyone else.