This two-part, seven-article series from the Chicago Sun Times originally published in October 2000 examines the phenomenon of random school shootings. Relying primarily on research done by the Secret Service, the articles examine the psyches, motivations, and profiles of adolescent school shooters from the last 25 years -- a varied bunch in terms of demographics -- and consider means to identify and rectify the sources of such violence as well as ways to prevent such catastrophes when they appear imminent. Links are provided to further information and research on the topic, including the Secret Service's National Threat Assessment Center, which offers a variety of publications and reports on the issue.