Michael Brelo Trial Day 7 Part 2 04/14/15 | Summary and Q&A

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March 9, 2016
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Law&Crime Network
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Michael Brelo Trial Day 7 Part 2 04/14/15

TL;DR

Detailed investigation into gunshot residue patterns and backfiring in a forensic context.

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Key Insights

  • ❓ Conducting detailed forensic analysis of gunshot residue patterns is crucial for determining firearm proximity.
  • 🥳 Backfiring in vehicles is often caused by misfires, improper fuel-air ratios, and exhaust leaks.
  • 🚙 Examination of window height in vehicles can provide important insights into past vehicle conditions and actions.

Transcript

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Questions & Answers

Q: What is the difference between gunshot residue and gunshot primer residue?

Gunshot residue consists of burnt and unburnt particles expelled from the front of the gun, while primer residue contains particles indicative of close firearm discharge.

Q: How does the presence of gunshot primer residue on a person's hand indicate firearm use?

Finding gunshot primer residue on a person's hand suggests they either fired a weapon, were in close proximity to a fired weapon, or handled a surface with residue on it.

Q: Why are clean spark plug connections important in preventing backfiring in a vehicle?

Clean spark plug connections prevent misfires, which can lead to unburnt fuel in the exhaust system, potentially causing backfiring.

Q: How did the expert analyze the height of the windows in the vehicle?

By measuring the height of the regulator and referring to the original dimensions of the glass, the expert determined the approximate height of the windows in the vehicle.

Summary & Key Takeaways

  • Analysis of gunshot residue deposition patterns based on distance.

  • Discussion on backfiring in vehicles, examining engine mechanics and conditions.

  • Determination of window height based on regulator dimensions in a vehicle.

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