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FILE - In a Tuesday, Nov. 22, 2016 file photo, a school bus is carried away, in Chattanooga, Tenn, from the site where it crashed on Monday. Attorney Amanda Dunn says she anticipates bus driver Johnthony Walker will plead not guilty if a grand jury indicts him. He's charged with five counts of vehicular homicide. Police say another count will be added. (AP Photo/Mark Humphrey, File)

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