Describe the most challenging fire you have investigated and why it was difficult. Then, explain how you used your skills, training, and expertise to solve the case. If you are new to the field, explain how you would proceed with investigating a challenging fire based on what you have learned during your fire investigation training.

When responding to this question, avoid describing a run-of-the-mill fire. If the interviewer determines that you find a typical fire investigation challenging, they may question your investigative skills.

"The most challenging fire I have investigated was a condemned hotel scheduled for demolition. One week before it was to be torn down, a fire started in the building. There were reports of possible occupants squatting in the building, so fire crews entered for an interior attack and to search for victims. Five firefighters took the stairs to the second floor when the stairs collapsed, killing one firefighter and injuring the other four. I later determined that the stair support beams were removed, the water had been cut off to the sprinkler system, and the fire was started with balloons filled with gasoline and hung from the ceiling. The most challenging part of the investigation was handling an arson fire that turned into an arson and a murder investigation. It took eight months to prove, but in the end, the owner and his business partner were arrested for aggravated arson and manslaughter."