Tim Gaffney spent the first 16 years of his law enforcement career with the Mesa Police Department. While working for the Mesa Police Department, he was assigned to the Traffic Division where he worked impaired driving enforcement and education for 9 years. Tim also spent 6 years as the agencies spokesperson. After leaving the Mesa Police Department in 1997, he went to work for the Arizona Governor’s Office of Highway Safety where he served as the Arizona Impaired Driving Training Coordinator. Tim is an active instructor in many impaired driving training fields and has taught officers and prosecutors throughout the United States and Canada. He has been declared an expert witness in various courts throughout the state in regards to impaired driver training and law enforcement policy and procedures.