What is one of the three phases of the NFA size-up system?

The NFA size-up system is crucial for effective incident management and firefighting operations. One of its three phases is pre-incident information, which involves gathering and evaluating relevant details about the incident before actually responding to it. This phase is vital as it helps fire officers to understand the potential risks, resources needed, and strategies for mitigating the emergency effectively.

Pre-incident information encompasses factors like building construction, occupancy, environmental concerns, and historical data related to previous incidents at the site. By acquiring this information, firefighters can develop a more informed approach to their response, ensuring safety and enhancing the chances of a successful outcome.

This phase sets the stage for the subsequent stages of the size-up process, which typically focus on the assessment of the immediate situation upon arrival and the ongoing evaluation of conditions as they change. Other options, such as post-incident analysis, resource confirmation, and immediate threat assessment, are important components of incident management but do not represent one of the foundational phases in the NFA size-up system.