What does MAYDAY signify?

• A. A situation where a firefighter or crew is lost, missing, trapped, or injured.
• B. A routine check-in.
• C. A request for a water supply.
• D. A medical emergency only.

Answer: (A)

Mayday is the firefighter emergency distress signal used to indicate that someone is in life‑threatening danger and needs immediate rescue. It covers situations where a crew member is lost, missing, trapped, or injured and cannot safely get out on their own. This signal triggers rapid response, activates emergency protocols, and shifts the incident into an urgent rescue mode with a focus on locating and freeing the affected crew.

It’s not used for routine check-ins, requests for a water supply, or medical emergencies alone. Those communications are handled through standard status updates or other signals. In practice, a Mayday is called as soon as danger is recognized, often spoken aloud as Mayday multiple times, and followed by essential details like location, unit, and situation to help rescuers act quickly.