Understanding the origin and cause of a fire is critical for both legal accountability and fire prevention efforts. This workshop will provide company officers and fire service personnel with foundational knowledge and best practices in fire scene investigations. Attendees will learn how to secure a scene, recognize indicators of fire patterns, preserve evidence, and coordinate effectively with investigators and law enforcement. The workshop will also explore the scientific principles of fire behavior, documentation techniques, and the legal considerations surrounding investigative procedures. Whether you're first on scene or assisting in follow-up efforts, this workshop equips you with the tools to approach fire scenes with an investigative mindset and contribute meaningfully to determining cause and origin.