Which code is used for general investigations?

• A. Mailbox Fire
• B. Large Animal Rescue
• C. Lock In / Lock Out
• D. Investigation

Answer: (D)

General investigations are coded as Investigation to signal that on-scene assessment is needed before a specific type of response can be determined. This code serves as a flexible catch-all for reports that aren’t clearly one predefined incident, allowing responders to verify facts, check for hazards, and decide what resources are actually required. The other options point to clearly defined situations—mailbox fire, large animal rescue, or a lock-in/lock-out event—so they’re not appropriate when the situation isn’t yet defined. Using Investigation helps ensure crews arrive prepared to assess and categorize the incident accurately.