"It used to be at an airport you could get anything you wanted--as long as it's a hot dog or a piece of cold pizza, " jokes Greg Principato, president of the North American Region of the Airports Council International.

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"When you want to sell hot dogs, fried chicken, gyros and pizza, it's probably a good bet that you're not going to get a good slice of pizza, " said Mr. Riggio, who left his job as a lawyer to run the pizzeria after his father died in 2007.

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Dad does barbecue on the weekends and on the nights when Mom's away takes a pizza out of the freezer or makes boiled noodles with sliced hot dogs on top.

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