Workin’ Joe E04 Scientific Investigation Section Part 3: Trace Evidence – Chief Logan works a day in the Scientific Investigation Section to see how the Trace Evidence Unit looks for gunshot residue particles collected from a person.

Workin’ Joe E03 Scientific Investigation Section Part 2: Ballistics Comparison – Chief Logan works a day in the Scientific Investigation Section to see how the unit test fires bullets for comparison with evidence.

Workin’ Joe E02 Scientific Investigation Section Part 1: Fingerprints – Chief Logan works a day in the evidence processing unit of the Scientific Investigation Section to see how the unit uses chemicals to make latent prints visible.

Workin’ Joe E01 Vehicle Maintenance Section – Chief Logan works a day in the garage with HPD’s Vehicle Maintenance Section to find out what it takes to keep patrol vehicles on the road.