“Despite the range of out-there theories he hears about D.B. Cooper, Kaye considers it very different from, say, looking for Bigfoot, where ‘you’ll never make any progress because it’s not there.’ Cooper, on the other hand, ‘is actually there, he’s actually a person, he actually did it.’ Twelve years from first dipping a toe in the mystery, Tom Kaye admits he’s still wading in.”