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International Training Conference & Expo


Fire Scene Origin Determination and Photography Emphasizing Ventilation Effects

Friday, April 15, 2022 (8:00am – 12:00pm) (Ballroom 6)


Fire scenes constantly challenge investigators to properly recognize, analyze, and photograph fire effects, especially in fire scenes that progress past flashover. This presentation introduces the Ventilation Pattern Analysis Approach (VPAA) for fire scene origin determinations and addresses photography tools and skills to properly document the investigation.

The VPAA is a step-by-step process of determining fire origin emphasizing recognition of ventilation effects and codifies the modern fire scene investigation methodology and provides a framework to process a post-flashover fire scene.

Learning Objectives:

  1. Provide a comprehensive method to conduct fire scene origin examinations.

  2. Understand the importance of determining fire flow path(s) during the examination.

  3. Illustrate effective fire scene investigation photography tools and techniques.

  4. Address bias in scene investigations.

  5. Re-examine proper, rigorous hypothesis testing.


Scott Renter

Scott Renter is a 28-year veteran of the Denver Fire Department, serving in the Fire Investigation Unit as a full-time Fire/Arson Investigator for the past 16 years, as well as holding a Task Force Officer position with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF).  In December 2017, Scott partnered with ATF-trained K-9 Cora to become Denver Fire Department’s first accelerant detection canine team. During his career, he has investigated over 700 fires and explosions, has taught fire investigations to numerous agencies, and holds IAAI CFI, CI, and ETC certifications.

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