“The techniques would include cyber-searches of language that mass-casualty shooters have used in e-mails and Internet postings,” Mr. Kelly said in a statement. “The goal would be to identify the shooter in cyberspace, engage him there and intervene, possibly using an undercover to get close, and take him into custody or otherwise disrupt his plans.”
http://www.nytimes.com/2012/12/21/ny...ings.html?_r=0