01/26/10 RENTON, Wash. - Retired Boeing R&D man Bob Dempster is setting out on an expedition to fly around the world. That's not an especially daunting task these days -- until you realize that he's doing it in a plane designed more than 80 years ago, and that he's building the plane himself. "It's a big model airplane," said Dempster. "I guess some of us never grow up." With the precision of fine ...

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