-We have the three various and incomplete male DNA profiles on the tie. At some point we may find a good candidate who can provide a good DNA sample, and we’ll get a match. Since the samples on the tie aren’t complete, we can’t be 100% sure, but once we have a candidate like this, an investigation should find plenty of circumstantial evidence to go with the DNA evidence. We’ve been told familial DNA match would be impossible from these partial matches.
-In theory, there is a complete DNA profile on the recovered cigarette butts. If that evidence is found, a DNA profile (including a racial profile) will help match suspects to DB Cooper. There are a number of survivors and relatives that will link a candidate to the complete profile (Familial testing) and we can be nearly certain about who Cooper was. A complete DNA sample will give us racial information, and we could even produce a realistic bust of our hijacker.
-There are a few details the FBI has never released about the hijacking. A deathbed confession with the necessary details, or a posthumous confession out of the woodwork could get us our guy. However, if Cooper is dead and hasn’t left a written confession with these magical details, then those details are useless.
-We get a complete list of engineers and managers from Industrial Chemical companies operating in the 1970’s, and we investigate each one in turn. This would be difficult, but not entirely impossible. Publicity could result in former coworkers of Cooper’s coming forward, from there we might get employment records, census records, payroll information, photos from company picnics; all could lead to a falsifiable candidate. The problem is most people are unaware of the Kaye findings. The people who would have been working with Cooper at these chemical companies would all be in their 60s/70s/80s, so the clock is ticking here.
-Large databases are used to find all those who match the various Cooper details, and each is investigated in turn. Larry Carr, former Norjack case agent, felt he could solve the crime by getting access to military records, cross referencing physical descriptions with job descriptions, finding those who worked as loadmasters (they had to wear parachute harnesses) and then tracking matches through their lifetimes. Carr would not only need access to these databases, he would need a lot of human resources to work through all that information.
-Someone finds a skeleton with money tied to it. Since I don’t believe Cooper died in the jump, I doubt this will happen.
It is my opinion this case will get solved.