Which elements are part of the initial area layout at a critical incident?

• A. Killzone, inner perimeter, outer perimeter
• B. Command post, staging area
• C. Both A and B
• D. None

Answer: (C)

In the initial area layout at a critical incident you establish both protective zones and functional support areas. The protective zones include the killzone, inner perimeter, and outer perimeter: the killzone covers the area of immediate danger, the inner perimeter secures the scene and controls access to those handling the incident, and the outer perimeter creates a wider buffer to protect the public and allow safe movement of responders and equipment. Alongside these physical boundaries you place functional areas to manage the response, such as the command post where leadership coordinates operations and the staging area outside the outer perimeter where resources are gathered and prepared for deployment. Because both the protective zones and the command/staging areas are integral parts of the early layout, all of these elements belong in the initial setup.