Which situation would NOT typically prompt deploying a master stream?

Deploying a master stream is typically reserved for situations where there is a significant amount of fire or a substantial risk to life and property. Master streams are powerful tools designed to deliver large volumes of water at high pressure, making them ideal for dealing with heavy fire conditions or protecting firefighters engaged in defensive operations.

In the context of minor fire conditions, the use of a master stream would not be appropriate. These conditions often can be managed with handheld lines or smaller attack methods, as the fire would likely be contained and controlled without the need for the excessive volume of water that a master stream provides. Using a master stream in such situations could lead to unnecessary water damage, extended response times, or the reallocation of resources that could be better utilized elsewhere.

The other situations, such as defensive operations, heavy fire conditions, and unstable structures, often necessitate the use of a master stream to effectively manage the threat posed by the fire, safeguard the firefighters, and protect nearby structures.