What operational mode is typically conducted from inside the fire building?

The operational mode typically conducted from inside the fire building is the offensive mode. In this approach, firefighters enter the structure to actively combat the fire and protect occupants' lives. The goal of offensive operations is to extinguish the fire at its source and mitigate property damage by addressing the fire where it is burning rather than around it.

In contrast, defensive mode involves strategies focused on protecting exposures and preventing the spread of the fire, typically conducted from a safe distance outside the structure. Support operations generally involve logistical and operational assistance that complements firefighting efforts but does not directly engage with the fire itself. Containment refers to techniques used to confine the fire to a specific area, which can occur in both offensive and defensive scenarios but is not exclusively associated with operations conducted inside a building.