What is a crucial step for the first due engine once on the scene of a blast?

Providing a size up and informing command is a critical step for the first due engine upon arriving at the scene of a blast. This process involves assessing the situation to determine the extent of damage, the potential risks involved, and the necessary resources required for an effective response. By conveying this vital information to command, the first due engine can help shape the overall strategic approach to the incident, ensuring that all responding units are effectively coordinated and that safety protocols are observed.

This size up includes evaluating the current hazards, identifying any victims, and understanding the environment, which is essential for making informed decisions on how to proceed. It sets the foundation for subsequent actions, such as triage, evacuation, or any necessary containment measures, but must follow the initial assessment of the situation. By informing command, the first due engine facilitates a well-organized response and contributes to the efficient management of the incident overall.