What must an ETOPS alternate airport be able to provide regarding firefighting?

The correct requirement for an ETOPS alternate airport regarding firefighting capabilities is that it must be able to provide augmentation by local assets within 30 minutes. This means that, in the event of an emergency, local firefighting resources should be able to reach the airport quickly to assist with any incidents.

ETOPS, or Extended-range Twin-engine Operational Performance Standards, stipulates that airlines operating routes more than 60 minutes from a suitable airport need to have specific standards in place for alternate airports. In this context, while there are categories of Rescue and Firefighting Services (RFFS), what is emphasized is the airport's ability to respond to an incident with local resources quickly enough to ensure safety.

The focus on "augmentation" implies that while an airport might not have a full-time firefighting unit stationed on site, it should still have the capability to call upon additional resources in a timely manner to effectively manage emergencies. This ensures redundancy in safety measures and enhances the emergency response capability of the airport.

Other options may outline specific categories of firefighting resources or permanent units, but the requirement for local augmentation emphasizes the critical need for a rapid response, which is vital for maintaining operational safety standards in ETOPS flights.