Which of the following is part of the first step in the SLICERS process?

The first step in the SLICERS process is "Size up." This step involves evaluating the situation upon arrival at the scene of a fire. Size up is crucial as it helps firefighters collect essential information about the incident, including the fire's location, extent, potential hazards, and the presence of victims. By thoroughly assessing the circumstances, firefighters can make informed decisions regarding their response tactics, resource allocation, and the safety of both the occupants and emergency personnel.

Effective size up allows for a better understanding of the operational environment, which can significantly influence fire attack strategies and overall incident management. By focusing on size up first, firefighters can prioritize their actions and ensure a coordinated and effective response to the emergency. Other options, while critical to the overall firefighting process, occur later in the incident management sequence.