What is the maximum response time set by NFPA for aircraft accident emergencies?

The correct answer of 5 minutes aligns with the standards set by the National Fire Protection Association (NFPA) for airport firefighting operations. This time frame is critical because it is generally accepted that emergency responders should arrive at the scene of an aircraft accident within five minutes to effectively mitigate the situation and begin lifesaving measures.

This time threshold allows for quick action during the crucial moments following an aircraft incident, where injuries can escalate without prompt medical intervention and the risk of fire spreading is heightened. The NFPA recognizes that a rapid response can significantly affect outcomes in emergencies, making it essential for firefighting personnel to adhere to this standard.

In contrast, the other response times proposed do not align with this established protocol. Each of those options suggests either a longer timeframe that can lead to increased risk to life and property or fails to meet the industry's commitment to effective emergency response. Hence, the 5-minute standard represents a well-established benchmark for the promptness required in managing aircraft accident emergencies.