Which federal agency has employees that are trained and certified as fire investigators?

• A. Bureau of Alcohol, Tobacco, and Firearms (ATF)
• B. National Institute of Standards and Technologies (NIST)
• C. Federal Bureau of Investigation (FBI)
• D. Occupational Safety and Health Administration (OSHA)

Answer: (A)

Fire investigation requires specialized training to determine where a fire started and what caused it, distinguishing accidental from intentional fires. The agency whose mission explicitly includes investigating arson and handling fire-and-explosives cases is ATF, and its agents receive training as fire investigators with certification to perform origin-and-cause determinations. They work fires scenes, collect evidence, and collaborate with local authorities to support arson investigations. The other agencies focus on different roles: NIST centers on standards and research rather than field fire investigations; the FBI does arson work but not as a centralized, nationwide fire-investigator certification program; OSHA concentrates on workplace safety and incident prevention rather than certifying fire investigators. So ATF is the correct choice because fire investigation is a formal part of its investigative mission.