In which type of operation are large handlines and master streams more often used?

Large handlines and master streams are predominantly utilized in defensive operations. This type of operation is primarily focused on protecting exposures and preventing the fire from spreading, rather than engaging in aggressive interior attack strategies. In a defensive posture, firefighters prioritize controlling the fire from a safe distance, often deploying these large-caliber hoses and streams to apply a significant volume of water to the fire.

Employing large handlines and master streams allows firefighters to cover larger areas and effectively manage intense heat and smoke conditions, which are critical in protecting surrounding structures or preventing fire from advancing. This method is particularly essential in scenarios where the fire is too large or dangerous to approach directly, emphasizing the importance of safety while still working to mitigate the fire's impact.

In contrast, offensive operations typically entail direct engagement with the fire and usually rely more on smaller handlines to gain access and attack the blaze from within. Indirect operations might include using streams to create a barrier or to cool gases but are not solely defined by the use of large handlines or master streams. Tactical operations may employ various strategies depending on the specific incident. However, it is the defensive strategy where the application of large and master streams becomes significantly more pronounced, aligning with the need to control rather than confront the fire directly