Which description matches Code 3?

• A. Immediate response to life-threatening emergency or AF priority resources; lights and siren.
• B. Non-urgent routine response.
• C. No response.
• D. Only a radio notification.

Answer: (A)

Code 3 is the designation for an immediate response to a life-threatening emergency or to priority resources, using lights and siren. This signals that time is critical and assets must be dispatched with the highest urgency, granted right-of-way, and coordinated through proper radio communications. The aim is to reach the scene as quickly as possible while still maintaining safety and control. The description that matches this is the one that explicitly calls for an immediate response with lights and siren to life-threatening emergencies or priority resources. The other options describe less urgent actions or mere notifications and do not convey the rapid, high-priority mobilization meant by Code 3.