Remarks by Homeland Security Secretary Michael Chertoff at a Securing the Schools Initiative Event [October 30, 2007] [open pdf - 35KB]
From the remarks of Secretary Chertoff: "Through the Safe School Initiative, we comprehensively assessed over 25 years of school shootings and incidents; 37 incidents in particular of targeted school violence involving 41 attackers. And it looked at the characteristics and the behavior of people involved in these kinds of incidents, recognizing very importantly that often these are incidents which do have some harbingers; they don't simply erupt out of the blue, but there are some warning signs. In fact, in 81 percent of the cases studied as part of the Safe School Initiative, other people had some kind of prior notice of the possibility of an attack before that attack was carried out. And I think that in this particular new century that we're in, where students are now communicating online and using chat rooms and e-mails and text messages, there are even more opportunities to detect and be made aware of potential threats before they actually come to pass. And that's why it's very important to know what to look for and how to respond."
Dept. of Homeland Security: http://www.dhs.gov/