Using a Systems Approach for Threat Assessment Investigations: A Case Study on Jared Lee Loughner [open pdf - 908KB]
"When someone comes to the attention of law enforcement for engaging in threatening or concerning behavior, a threat assessment investigation may be initiated to assess the individual's risk for engaging in targeted violence. When conducting a comprehensive assessment of the risk a person may pose, it is essential to gather detailed information from multiple sources to enhance your understanding of the individual's life circumstances and why the individual engaged in the behavior that brought him or her to the attention of law enforcement. This investigative process is supported through the use of a systems approach, which serves as a vital tool for law enforcement to uncover information that may prevent an act of violence from occurring. Using examples from the case of Jared Lee Loughner, who opened fire at a 'Congress on Your Corner' event in January 2011, this document offers some key considerations in applying a systems approach to threat assessment investigations and management. A case summary about Loughner's life also follows."
U.S. Secret Service: http://www.secretservice.gov/