Marty Mahon is a police sergeant with the South San Francisco PD. He has been a canine handler for 16 years and is currently the head trainer of the canine unit, which consists of 7 dual-purpose canine teams. Marty and his canine are assigned to the Drug Enforcement Administration, San Francisco Field Division, where he is responsible for drug interdiction and investigations of drug trafficking organizations. Marty specializes in drug trafficking, canine detection, canine unit supervision and the use of canines at the federal level. Marty is a canine evaluator for the Peace Officers Standards and Training (POST), and the California Narcotics Canine Association (CNCA). Marty also trains canine teams in Northern California in patrol and detection.