Mark F. Teceno, is a medically-retired police officer from Maine. He served two enlistments as Staff Sergeant for the U.S. Air Force Security Police and is a former police detective, police polygraph examiner and instructor for the Maine Criminal Justice Academy. For more than two decades as a law enforcement officer then as an expert for the defense, Mark has been involved with investigating numerous murders and other high-profile cases in Maine. He specializes in the use of polygraph with child and sex abuse cases and sex offender treatment. He is a founding member, current secretary, seminar coordinator and past president of the Maine Polygraph Association. He is also a member of the American Polygraph Association and has been appointed to the Maine Governor’s Advisory Board for Polygraph.