Former FBI (20 years) Supervisory Special Agent, assigned to the Behavioral Analysis Unit. Program Manager of Threat Assessment/Forensic Linguistics Program.  Only certified and qualified criminal profiler and forensic linguist in the entire history of the FBI and world-wide.  Utilized text analysis methods resulting in the apprehension of Ted Kaczynski, aka the Unabomber. During FBI career, participated in high-profile violent crime and counterterrorism-related investigations, utilizing forensic linguistics to further investigations and prosecutions when appropriate.  Testified numerous times in both federal and state court as an expert in textual analysis and forensic linguistics.  First person ever to provide expert testimony in US federal court in textual analysis.  Reviewed and assessed thousands of communications from a threat assessment, statement analysis or authorial attribution perspective.  Created, designed and implemented the FBI's Communicated Threat Assessment Database (CTAD), a one-of-a-kind repository for all threatening and criminal communications. In CTAD, every word and lexical feature in every communication is fully searchable and comparable using both behavioral and linguistic parameters.  Primary instructor of "Threat Assessment and Text Analysis: Utilizing a Forensic Linguistic Methodology," both domestically and internationally.  Created the FBI's week-long "Forensic Linguistic Workshop for Law Enforcement Practitioners," the only course of its kind in the US.