Which of the following is NOT a component of the LUNAR acronym used in MAYDAY situations?

• A. Location
• B. Unit ID
• C. Name/Designation
• D. Radio Channel

Answer: (D)

LUNAR is a concise, structured report used in MAYDAY situations to rapidly convey critical information. It focuses on five key pieces: Location (where you are), Unit (which unit you belong to or your unit ID), Name/Designation (your name or role), Assignment (what you’re attempting to do or what you’ve been assigned), and Resources (what you need, such as air, tools, or backup). This enables responders to quickly understand your exact situation and what support to send.

Radio Channel is not part of the LUNAR payload. The channel you’re using is an operational detail handled by the incident communications plan, not by the MAYDAY information you relay through LUNAR. So the component that isn’t part of LUNAR is the radio channel.

For example, in a MAYDAY, you might relay: Location: stairwell on the third floor, Unit: Engine 12, Name: Firefighter Smith, Assignment: locate and evacuate occupants, Resources: additional SCBA.