Visitor stops at a makeshift memorial on Northern Illinois University campus Saturday, Feb. 16, 2008 in DeKalb, Ill. On Thursday,Steven Kazmierczak, armed with three handguns and a pump-action shotgun, stepped from behind a screen on a campus lecture hall's stage and opened fire on a geology class. He killed five students before committing suicide. (AP Photo/Nam Y. Huh)

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