Yup, and Tina might know things she doesn't realize are important, too.
At the moment, the big question I have for Tina AND the FBI is why they were tailing Tina and her husband in the mid-1970s. I spoke with Alan a couple of weeks ago and he confirmed that they were followed on multiple occasions. He is convinced they were FBI, but doesn't know if it was for surveillance or protection.
Getting some kind of conversation going with Tina is going to take something along the lines of Divine Intervention. Somebody, somehow who can earn her trust in a legitimate way, and help her open up about Norjak. Yes, Allison Berg got her on to the HC set, and as great an accomplishment as that was, it only touched the tip of the iceberg. Neither Allison, nor her boss at LMNO, Ted Skillman, really pushed the issues - why the silence, did she really talk with Byron H. Brown, what happened on 305 during the re-fueling, her relationship with the FBI, their surveillance, her medical status in 1979, what was Cooper really like, etc.
Gawd, the HC had such a gold mine at their fingertips - Bill Rataczak, Tina, Tom Fuentes, John Detlor, Robert Fuhriman, Himmelsbach, and they got so distracted by the Colbert-Rackstraw show. That might be the real legacy of "DB Cooper - Case Closed?" So many principals, so little probing....
...was it intentional? Orchestrated? Hmmm...