Phoenix Police Lieutenant Walter Duane Robinson Walter D. Robinson brings over 26 years of law enforcement experience at the operational, supervisory, and management level in the state of Arizona where he served with the Phoenix Police Department in a wide range of investigative and administrative positions including command assignment in Street Narcotics, Homicide, Robbery and Auto Theft. Mr. Robinson maintains an exceptional understanding of law enforcement policy, procedure and accepted practices, at the federal, state and local levels and is considered a subject matter expert in most types of violent criminal investigations. He is frequently called upon to provide expert testimony on matters being heard in federal and state courts. At the federal law enforcement level, Mr. Robinson ser