Christopher (Chris) D. Duncan graduated from George Mason University with a BA in History and earned his MA in Criminology from the University of Houston-Clear Lake. He is a retired Senior Police Officer with the Houston Police Department and was previously an active member of the International Association for Identification (IAI). Chris has written several articles on forensic evidence college and documentation and has over 1500 hours of training specific to the documentation, collection, and the processing of physical evidence having worked 20 years of his 29 years in law enforcement as a Crime Scene Investigator. Prior to his days in the Crime Scene Unit, he was assigned as a patrol officer and a Gang Task Force Officer. Chris is now a and teaches Criminal Investigation and Law Enforcement classes at Klein Collins High School in Texas.