The Garcias' neighbor, Steve McEndree, saw cars lined up for a mile or more by gas stations as he made the drive from his Humble home to George Bush Houston Intercontinental Airport before dawn Tuesday.

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Shortly after United Airlines Flight 1632 took off from Houston's Intercontinental Airport at 8:08 p.m.

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Among the top 10, three are United-Continental hubs: Houston's Bush Intercontinental, Newark's Liberty and Washington's Dulles airports.

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