What focuses on bringing more resources to bear as per firefighting strategies?

The focus of bringing more resources to bear in firefighting strategies is embodied in the concept of reinforcement. When firefighters reinforce an operation, they are essentially augmenting the existing resources, which may include personnel, equipment, water supply, and other support systems. This tactical approach is crucial in large-scale incidents where the initial resources may not be sufficient to effectively manage the fire or achieve operational objectives. By reinforcing, incident commanders can increase the capacity to fight the fire, protect lives, and safeguard property, thereby improving the overall response effectiveness.

The other strategies, while important in their own right, do not emphasize the allocation of additional resources in the same way. For example, "defend" primarily involves protecting structures or areas with the resources currently available without necessarily adding more. "Advance" typically refers to progressing the firefighting effort into more challenging terrain or conditions, often with the resources already onhand. "Withdraw" is a tactic used in emergencies when it is unsafe to continue, which does not involve bringing additional resources but rather removing what is already there for safety reasons.