Have you ever been given a polygraph examination? Polygraph, commonly known as a lie detector, is highly controversial. The US military and government agencies such as the FBI, CIA, NSA and Department of Defense all use polygraph examinations for pre-employment screenings, for criminal investigations, and in matters of national security. Conversely, It is allowed for investigating specific crimes in corporate America, yet not allowed to screen civilian candidates for hire. It is often used by the defense to test the credibility of a criminal defendant; yet, it isn’t admissible in most legal proceedings. So, why bother using polygraph, you ask? Renowned expert polygraph examiner and former FBI Special Agent, Jack Trimarco, will address these issues and more.