What is one of the responsibilities of the first communicator during a firefighting incident?

One of the primary responsibilities of the first communicator during a firefighting incident is to inform the captain. This action is crucial as it ensures that the captain is aware of the situation and can make informed decisions regarding the safety of the aircraft, crew, and passengers. The communication of vital information about the fire's location, size, and nature helps in formulating an effective response plan, which may include controlling the fire, preparing for an emergency landing, or initiating passenger evacuation if necessary. Keeping the captain informed is essential for effective crew resource management, ensuring coordination and clarity during a high-stress situation where quick decisions are vital.