The School Shooter: A Threat Assessment Perspective Mary Ellen O'Toole, PhD Supervisory Special Agent Federal Bureau of Investigation Critical Incident Response Group (CIRG) National Center for the Analysis of Violent Crime (NCAVC) FBI Academy Quantico, Virginia 22135 Why would a student bring a weapon to school and without any explicable reason openfire on fellow students and teachers? Are school shooters angry? Are they crazy? Is their motive revenge?...