If a passenger throws their cell phone in the aisle and shouts "fired!", what is the immediate action required?

The scenario involves a potential fire threat, which is considered a serious safety concern in an aircraft environment. The phrase "shouts 'fired!'" indicates that there may be an immediate risk of a fire starting from the thrown cell phone, necessitating an urgent response.

Taking immediate and aggressive action to fight the fire is critical because fires on an aircraft can pose a severe danger to all passengers and crew. Rapid identification and response to such threats can prevent escalation, ensuring the safety of everyone onboard. In this context, the use of onboard fire extinguishers or other fire suppression tools would be prioritized to control or extinguish the potential fire right away.

While other options may have relevance in broader safety protocols — such as calling for additional crew support or securing the area — the urgency of addressing a potential fire takes precedence. Evacuating passengers could lead to panic and potential injury if there is no immediate threat, which makes the focus on extinguishing the fire the most logical and necessary course of action.