Georger (continued):  To solve the case all the FBI needs to do is compare the DNA from the four letters with what they already have from Sheridan Peterson and a match (and I truly believe they would get a match) would prove that Sheridan was in the Portland area at the scene of the crime for Norjak and not in Nepal as his phoney alibi says. So easy to solve and yet the FBI is stuck on stop probably on the order from the US Attorney Generals Office (and we know how he works). The FBI needs to solve the crime and get it off their books as a success and not as their only unsolved crime. . Another aspect of DB is the disguise he use was so simple. He wore sunglasses to cover his eye color (what the FBI looks at to identify the suspect). The only time he took off the sunglasses was to show the Flight Attendants his eye color. They said he had "piercing brown eyes" which covered up hi actual blue eyes. No other disguise was necessary and it did the trick with the investigators.

Bob Sailshaw
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Here's what I know about the DNA.  As Georger said above, he has posted his info many times in many places, and I will do the same, because this seems like an ideal repository for this information.

1. The current DNA sample that the FBI has comes from epithelial cells found on the clasp. Larry Carr readily acknowledged to me that they could be DB Cooper's or anyone else who handled the tie. Larry confirmed it is a "partial" sample.

However, Larry did not comment on the statements made by Calame and Rhodes in their book that the tie entered the evidentiary collection in Seattle four days after the skyjacking and no one knows where it was during that time.

Further, Calame and Rhodes write that they interviewed the four FBI agents tasked with evidence retrieval in Reno, and none remember seeing, taking, or talking about the tie.

Compounding the confusion during the retrieval, Reno PD apparently was dusting for fingerprints, according to Rhodes, and a K-9 bomb sniffing team came aboard and ate the crew's dinner sitting on the seats in First Class, according to Rataczak.

2. The best source of DNA comes from human fluids, such as blood, semen, and saliva. As a result, the eight cigarette butts left by Cooper are ideal for DNA testing, even forty years later. These butts were tested circa 2002 because Pat and Ron Forman claim they heard a KIRO-TV news report stating that the FBI had Cooper's DNA from the cigarettes.

However, Larry reported on the DZ in 2008 that he went looking for the butts to test them for DNA, and they were missing. Also lost, apparently, was the paper work from 2002 detailing Cooper's profile.