By almost any standard, Boeing's commercial-jet factory in Everett, WA, is an impressive place. For one thing, it is the world's most voluminous building-you could fit all of Disneyland plus five hectares of parking in it. And it's the birthplace of many of the world's largest commercial jets, including Boeing's 767, 777, and 747, the legendary 400-plus seat jumbo jet that has dominated much of long-distance air travel over the last three decades. One of the factory's football-field-sized doors is emblazoned with a giant image of three jets soaring toward a crimson sunset and the inscription "Building the Future of Flight Together." But on a recent drizzly day, the door was partly opened, revealing that the cavernous hangar, big enough to hold three mid-sized passenger jets, is empty.

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