What is a critical step before firefighters enter a burning structure?

Conducting a size-up and assessing for hazards is crucial before firefighters enter a burning structure. This step involves evaluating the situation to identify potential dangers, such as the fire's intensity, structural stability, visible smoke and flame patterns, and the presence of occupants or hazardous materials. By performing a thorough size-up, firefighters can formulate an effective strategy for their entry and ensure they operate safely while protecting themselves and any potential victims inside the structure. Recognizing hazards helps them to anticipate risks and respond appropriately, ultimately enhancing their ability to navigate the environment effectively and complete their mission safely. This practice aligns with standard firefighting protocols, which prioritize safety and situational awareness.