Final answer:
After requesting a fire investigator, a fire officer should take custody of evidence and ensure that firefighting operations do not compromise the crime scene, while dressed in appropriate gear and continually assessing the situation.
Step-by-step explanation:
After a fire officer requests a fire investigator to respond to a suspected crime scene, they must preserve the integrity of the scene until the investigator arrives. This means they should take custody of evidence, ensuring that it is not tampered with or removed. The fire officer's role also includes ensuring that firefighting operations, such as rescuing victims from burning buildings and administering first aid, do not compromise the crime scene.
They must dress with equipment to protect themselves while preventing contamination of evidence. Using two-way radios, fire officers should continuously assess fires and situations and report to their superiors. It's crucial that they avoid actions such as contacting the media or requesting additional personnel unless these actions are necessary and do not interfere with preserving the crime scene.