Emergency personnel work the scene where a Greyhound bus bound for St. Louis from New York City flipped on its side on the Pennsylvania Turnpike, briefly trapping a woman and injuring about two dozen people, according to authorities, about one mile east of the Lancaster-Lebanon interchange, early Saturday, Aug. 13, 2011, near Manheim, Pa. (AP Photo/Lancaster Newspapers, Dan Marschka)

Associated Press
Emergency personnel work the scene where a Greyhound bus bound for St. Louis from New York City flipped on its side on the Pennsylvania Turnpike, briefly trapping a woman and injuring about two dozen people,  according to authorities, about one mile east of the Lancaster-Lebanon interchange, early Saturday, Aug. 13, 2011, near Manheim, Pa. (AP Photo/Lancaster Newspapers, Dan Marschka)
Emergency personnel work the scene where a Greyhound bus bound for St. Louis from New York City flipped on its side on the Pennsylvania Turnpike, briefly trapping a woman and injuring about two dozen people, according to authorities, about one mile east of the Lancaster-Lebanon interchange, early Saturday, Aug. 13, 2011, near Manheim, Pa. (AP Photo/Lancaster Newspapers, Dan Marschka)
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