Michigan State Police Grand Rapids Lab Firearms Unit / Grand Rapids Police / Bureau of Alcohol / Tobacco / Firearms and Explosives / Chicago Police Department / Local police / ATF‟s National Tracing Center / /
Person
Phil Betz / James Pierson / John Agar / Ashleigh Vogel / Terry McGee / Benjamin Hayes / Nicholas Roti / / /
Position
police officer / Technologist / Sergeant / Detective / officer / chief / IBIS technologist / chief in West Virginia / /