Dennis “Pat” Johnson, M.S. of Austin retired in 2014 after serving as deputy assistant director of the Texas Department of Public Safety (TDPS) Crime Laboratory Services. Previously, he served as manager of the TDPS Field Laboratories and as the supervisor of the TDPS Lubbock Field Laboratory. He is a member of the Texas Criminal Justice Integrity Unit and the TDPS Credit Union Audit Committee. He is a former member of the American Society of Crime Laboratory Directors and a subcommittee of the National Commission on Forensic Science. Johnson received a Bachelor of Arts in chemistry from Austin College, a Master of Science in chemistry from the University of North Texas and a Master of Business Administration from Texas Tech University. Additionally, he received an honorable discharge from the United States Army.