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Dektor Counterintelligence and Security Inc was a company started by Allan D. Bell Jr, President, Charles McQuiston, Vice President, Wilson Henry Ford, Vice President of Research and Development in Springfield Virginia around 1969-70. These three were responsible for inventing the Psychological Stress Evaluator (PSE) a stress analyzer which is often called a voice lie detector; however, it is actually a truth verification device. It is based on the microtremors which occur in the vocal cords when the speaker is under stress. These microtremors cannot be heard, yet they can occur either from external stressors (such as having a hot cup of coffee dumped on your lap) or from the internal stressor of lying when you know better. Michael Kratz, retired police officer was the lead instructor for the PSE class in Springfield Virginia. The PSE was featured in the old Mission Impossible show, in the Billy Jack Goes to Trial Movie. Allan Bell was featured in a Playboy article by Craig Vetter, now journalism instructor at Northwestern University in Illinois. It was also featured in George O'Toole's The Assassination Tapes which was about whether Lee Harvey Oswald actually killed President John F. Kennedy. George O'Toole brought PSE tapes (which were similar to EKG readouts) of an "annoymous" person saying, "No, I didn't shoot anybody, no sir" after being asked if he shot the President (JFK).

References: Hougan,Jim. Spooks: The Haunting of America : The Private Use of Secret Agents. O'Toole, George. The Assassination Tapes. Vetter. Craig. (1973) The Lie Machine, Playboy. Thrash, Jacqueline (Bell). daughter of the late Allan Bell Jr, president of Dektor Counterintelligence & Security, Inc.