Describe a scenario where using 10-5 (relay to another unit) is appropriate.

• A. When another unit with needed resources is closer or better suited for the situation.
• B. When you want to terminate a transmission.
• C. When you forgot the code.
• D. When you want to request a backup.

Answer: (A)

Relaying to another unit is used when another unit is closer or better suited for handling the situation because it keeps responses efficient and ensures the right resources are applied. If you’re on scene or en route and there’s a unit with the needed equipment, proximity, or authority, passing the call to them lets they take over with the necessary capabilities while you coordinate or stay available for follow-up. This keeps the radio channel focused and avoids duplicating effort.

It isn’t about ending the transmission; terminating a transmission is handled by a different procedure. It isn’t about forgetting a code, which isn’t a valid reason to use this code either. And it isn’t the mechanism to request backup—the proper backup request would use the appropriate procedure when you need additional units, not simply relaying the current incident to another unit.