In a rapidly evolving incident scene, which step is typically performed first?

• A. Establish a perimeter
• B. Identify hazards
• C. Coordinate with units
• D. Adapt as scene changes

Answer: (B)

Hazards are what you must identify first on a rapidly evolving incident scene. Quickly scanning for immediate dangers—like downed wires, fuel spills, moving traffic, smoke, or unstable structures—creates the safety picture you need to protect yourself and others. Once you know the hazards, you can decide what needs to be secured first, which area to cordon off, and what resources or units to bring in. This awareness also guides how you adapt as conditions change, since new dangers can appear or existing ones shift. Without first identifying hazards, actions like establishing a perimeter or coordinating with units could be unsafe or misdirected. Identifying hazards first sets the stage for safe, effective scene management.