CFI Investigative Planning & Methodology 2 — Questions and Answers
Question 1: When developing an investigative plan for a large commercial fire, what is the FIRST step an investigator should take?
- Begin physical examination of the fire scene
- Define the scope and objectives of the investigation (Correct answer)
- Interview all available witnesses
- Request laboratory analysis of debris samples
Correct answer: Define the scope and objectives of the investigation
Defining scope and objectives provides direction and ensures all investigative activities are purposeful and resources are properly allocated.
Question 2: In NFPA 921, the systematic approach to fire investigation is best described as which of the following?
- A linear process moving from origin to cause without deviation
- The scientific method applied to fire scene examination (Correct answer)
- A checklist-based protocol mandated by the fire marshal
- A legal framework for establishing criminal liability
Correct answer: The scientific method applied to fire scene examination
NFPA 921 explicitly frames fire investigation around the scientific method — forming hypotheses and testing them against data.
Question 3: A CFI arrives at a scene where multiple agencies are present. Which action best demonstrates proper investigative methodology?
- Immediately begin excavating the area of lowest burn to find the origin
- Establish communication with the incident commander to coordinate jurisdiction and access (Correct answer)
- Conduct witness interviews before other agencies can influence their statements
- Photograph only the exterior to avoid disturbing interior evidence
Correct answer: Establish communication with the incident commander to coordinate jurisdiction and access
Coordinating with the incident commander ensures proper jurisdiction is recognized and scene access is managed without evidence contamination.
Question 4: Which document type provides the legal authority for a fire investigator to enter and examine a private property after a fire?
- An insurance policy subrogation clause
- A consent form, administrative warrant, or criminal search warrant (Correct answer)
- A written request from the property owner's attorney
- A mutual aid agreement between fire departments
Correct answer: A consent form, administrative warrant, or criminal search warrant
Entry to private property after a fire requires either owner consent, an administrative warrant, or a criminal search warrant to be legally valid.
Question 5: When planning the documentation phase of a fire investigation, what is the recommended sequence?
- Sketch, photograph, then note-take
- Note-take, sketch, then photograph
- Photograph, sketch, then note-take (Correct answer)
- Note-take, photograph, then sketch
Correct answer: Photograph, sketch, then note-take
Photography should occur first to capture the undisturbed scene, followed by sketching for spatial relationships, then detailed note-taking.
Question 6: Which factor most significantly affects the order in which areas of a fire scene are processed during an investigation?
- The insurance company's preferred examination sequence
- The stability of the structure and safety hazards present (Correct answer)
- The number of witnesses available for immediate interview
- The time of day the fire was reported
Correct answer: The stability of the structure and safety hazards present
Structural stability and safety hazards determine which areas can be safely accessed and in what order, making safety the primary sequencing factor.
Question 7: A fire investigator is asked to re-examine a scene three days after the initial investigation. What methodology concern is MOST critical?
- Obtaining a new fire marshal authorization form
- Documenting chain of custody for any items moved since the initial exam (Correct answer)
- Re-interviewing all witnesses before entering the scene
- Ensuring the fire department has completed its suppression report
Correct answer: Documenting chain of custody for any items moved since the initial exam
When a scene has been accessed by others between investigations, documenting what moved and who had access is critical to maintaining evidence integrity.
CFI Investigative Planning & Methodology 2
When developing an investigative plan for a large commercial fire, what is the FIRST step an investigator should take?