CFI Report Writing & Case Presentation 3 — Questions and Answers
Question 1: When testifying as an expert witness, an investigator is confronted with a prior inconsistent statement. The best approach is to:
- Deny making the prior statement to maintain credibility
- Acknowledge the statement and explain any change in opinion with supporting reasoning (Correct answer)
- Request a recess to review notes before responding
- Blame the prior statement on a clerical error by support staff
Correct answer: Acknowledge the statement and explain any change in opinion with supporting reasoning
Acknowledging and explaining prior inconsistencies demonstrates intellectual honesty and maintains credibility with the jury or judge.
Question 2: In presenting burn pattern evidence to a jury, visual aids are most effective when they:
- Contain as much technical terminology as possible to establish expertise
- Are large, clearly labeled, and directly correlated to photographic evidence (Correct answer)
- Are created by the attorney, not the investigator, to avoid bias claims
- Reproduce entire NFPA 921 chapters for jury reference
Correct answer: Are large, clearly labeled, and directly correlated to photographic evidence
Clear, well-labeled visual aids that link directly to scene photographs help juries understand complex burn pattern evidence without technical confusion.
Question 3: Which of the following best describes the purpose of a fire investigation report's 'scene examination' section?
- To state the investigator's final opinion on fire cause
- To document weather conditions only
- To chronologically describe observations made at the fire scene (Correct answer)
- To list all suspects identified during the investigation
Correct answer: To chronologically describe observations made at the fire scene
The scene examination section provides a chronological, factual narrative of what the investigator observed during the physical examination of the scene.
Question 4: Which of the following is an example of an inappropriate opinion to include in a fire investigation report?
- The fire originated in the northeast corner of the living room.
- The ignition source was most probably an open flame.
- The suspect is guilty of arson and should be prosecuted. (Correct answer)
- The fire spread was consistent with accelerated burning patterns.
Correct answer: The suspect is guilty of arson and should be prosecuted.
Guilt or prosecutorial recommendations are legal determinations made by courts, not forensic findings; including such statements undermines report credibility.
Question 5: A fire investigation report references a laboratory analysis of a liquid sample. Where should the full lab report be placed?
- Within the narrative body text
- As an appendix or attachment to the main report (Correct answer)
- In a separate confidential file not shared with counsel
- Summarized in the executive summary only
Correct answer: As an appendix or attachment to the main report
Supporting documents like lab reports are placed in appendices so the main narrative remains readable while full technical data remains accessible.
Question 6: During cross-examination, opposing counsel asks a fire investigator to speculate beyond their findings. The investigator should:
- Speculate freely to appear cooperative with the court
- State that they can only testify to findings supported by the investigation (Correct answer)
- Defer all questions to the prosecuting attorney
- Expand their opinion to include the speculation requested
Correct answer: State that they can only testify to findings supported by the investigation
Expert witnesses must confine testimony to opinions supported by evidence and methodology — speculation outside the scope of findings is improper.
Question 7: What is the primary purpose of including a 'fire behavior analysis' section in a complex fire investigation report?
- To describe the weather on the date of the fire
- To document how fire spread from origin, supporting cause and origin conclusions (Correct answer)
- To estimate total dollar damages to the property
- To list all witness names interviewed during the investigation
Correct answer: To document how fire spread from origin, supporting cause and origin conclusions
A fire behavior analysis explains how fire travel patterns observed at the scene are consistent with the identified origin and cause, strengthening the report's conclusions.
CFI Report Writing & Case Presentation 3
When testifying as an expert witness, an investigator is confronted with a prior inconsistent statement.
The best approach is to: