Which action should a security officer avoid when responding to a fire?

When responding to a fire, a security officer should avoid entering hazardous environments. This action is critical as it poses significant risks to personal safety and can complicate an already dangerous situation. Hazardous environments can include areas with heavy smoke, toxic fumes, or potential structural collapses, all of which can severely impair visibility and accessibility, making it difficult for individuals to escape safely.

In contrast, remaining calm is vital for effective decision-making during emergencies, and using fire extinguishers can be an appropriate response if the situation allows for it and the officer has been trained on their proper use. Calling for help is essential as it ensures that professional firefighting assistance is on the way, providing support beyond what the security officer can do alone. Thus, avoiding entry into hazardous environments is fundamental to maintaining personal safety and the safety of others when responding to a fire.