What is the purpose of the inner perimeter in a critical incident?

• A. Protects the inner area and responders
• B. Publicize the incident to the media
• C. Coordinate food and catering for responders
• D. Direct air traffic away from the scene

Answer: (A)

In a critical incident the inner perimeter is set up as a restricted zone right around the scene to keep the area safe and under control. This protects both the people inside—the victims and responders—and the evidence being handled, by preventing unauthorized access, interference, or additional hazards. Only authorized personnel with a clear role and proper protection operate inside, which helps responders work more safely and efficiently. The other options don’t focus on safety and scene integrity: publicizing the incident to the media is managed separately to avoid compromising safety, coordinating food and catering is a logistical task outside the perimeter’s purpose, and directing air traffic away from the scene is only relevant in very specific aviation contexts, not the general aim of the inner boundary.