Id Url Resource class Title Description Source https://policing.umhistorylabs.lsa.umich.edu/s/crackdowndetroit/item/8807 Detroit Police Firearms Unit Preliminary Audit Findings Michigan State Police, "Detroit Police Firearms Unit Preliminary Audit Findings," Sept 23, 2008, online, accessed Aug 18, 2022, https://www.policeissues.org/Detroit_PD_crime_lab.pdf.