What is it called when two groups of fire fighters are operating hose lines "against" each other?

When two groups of firefighters are operating hose lines "against" each other, this situation is referred to as opposing hose lines. This scenario typically occurs in structural firefighting situations where firefighters are attempting to control a fire from two different sides or perspectives, often to establish better coverage and effectiveness in suppressing the flames.

The method allows both groups to apply water simultaneously but from different angles, increasing the efficiency of the attack on the fire. Engaging in opposing hose lines can be a strategic decision made during a firefight, especially in scenarios where the fire is large and multiple entry points or approaches are needed to combat it effectively.

Other options mention different strategies or practices such as a combination attack, which refers to using both direct and indirect methods of applying water, or offensive operations that encompass any tactical approach where firefighters enter a burning structure with the intent to extinguish the fire directly. A no-vent attack focuses on controlling ventilation to prevent the spread of fire and smoke. While all these techniques are valid in the firefighting context, they do not specifically describe the situation of two groups operating hose lines against each other like the term "opposing hose lines" does.