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Scott Studer takes his daughter Ella from his wife Jen as they ...

Sun Dec 27, 1:22 PM ET

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Scott Studer takes his daughter Ella from his wife Jen as they prepare to return home to Boston at the Detroit Metropolitan Airport after visiting family in Detroit Sunday, Dec. 27, 2009 in Romulas, Mich. The U.S. government tightened airline security as it searches for answers to how a 23-year-old Nigerian man eluded extensive systems intended to prevent attacks like his botched Christmas Day effort to blow up a Northwest flight from overseas.

(AP Photo/Charles Rex Arbogast)