D.B. Cooper: 40 years later November 24th, 2011, marks the 40th anniversary of the legendary Cooper case, an unsolved crime that has baffled agents, detectives and amateur sleuths, and spurned one of the greatest manhunts in law enforcement history. The FBI’s case file on D.B. Cooper runs some forty feet long. It is located in the basement archives of the Bureau’s field office in Seattle, where for four decades agents have hunted for the man who ransomed a passenger jet for a small fortune and parachutes, then jumped out the back over the rural Northwest, during the middle of a...