Don served more than 23 years with the Pima County (AZ) Sheriff's Department, retiring in 2015. His assignments with the department included training director, patrol district commander, special operations, tactical response and staff services section commander, as well as the support operations and criminal investigations division commander. He now leads NTOA's Training and Education Department, as well as their prestigious cadre of instructors. He also manages NTOA training courses, seminars and conferences, as well as develop strategic plans to keep the NTOA at the forefront of law enforcement training and practices.

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