U.S.

Associated Press
A helicopter flies overhead with its spotlight on over the Ambassador Bridge between Detroit and Windsor, Ontario after it was closed down by a bomb threat Monday, July 17, 2012. Someone phoned in a threat from the U.S. side of the busy international border crossing around 7:20 p.m. (AP Photo/Detroit News, Elizabeth Conley)  DETROIT FREE PRESS OUT; HUFFINGTON POST OUT

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