Doug Castelberry is an eighteen-year veteran firefighter. He has served as a paid firefighter with the South Padre Island, Edna, and Victoria fire Departments and currently works for the Bellaire Fire Department. He is certified as a Master Firefighter with the Texas Commission on Fire Protection and as a Paramedic with the Texas Department of Health Services. He is also certifed as a police officer (Basic), arson investigator (Master), Haz-Mat Technician, Swiftwater Rescue, SCUBA Diver, and as an Intermediate Firefighting Instructor with the TCFP. He has served as a volunteer firefighter with New Caney, Port Isabel, and Edna fire departments before coming to Tarkington.