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Andre Simons runs an FBI unit that works to stop shootings before they happen, and in the past year his behavioral team has tackled 150 cases -- not one resulting in violence

Andre Simons runs an FBI unit that works to stop shootings before they happen, and in the past year his behavioral team has tackled 150 cases -- not one resulting in violence. When the unit gets a heads up about threatening behavior, analysts work to re-direct the subject to mental health treatment, monitoring or custody. Bob Orr reports.

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Investigators say the student who opened fire last week at a Colorado high school was firing at random when he struck a 17-year-old girl in the head, putting her in a coma

Investigators say the student who opened fire last week at a Colorado high school was firing at random when he struck a 17-year-old girl in the head, putting her in a coma. The shooter's primary target was a librarian who had previously taken disciplinary action against him. Rick Sallinger of CBS station KCNC reports.

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