During a fire attack, which type of stream is recommended for extinguishment?

The recommendation to use a straight stream for extinguishment during a fire attack is based on its effectiveness in delivering water directly and powerfully to the fire. A straight stream provides a focused and concentrated flow of water, which allows for better penetration into the fire. This is particularly important when trying to reach deep-seated fires or when the fire is shielded by obstacles. The straight stream helps cool the burning materials efficiently and reduces the temperature, which is crucial for extinguishing flames quickly and effectively.

In contrast, while fog streams can provide cooling effects and protect firefighters from heat, they may not penetrate deeply enough to directly attack the seat of the fire. Foam is useful for suppressing flammable liquid fires by forming a blanket over the liquid, but it may not be applicable in all types of fire scenarios. The option of using any type of stream available lacks specificity and does not necessarily prioritize the most effective method for extinguishing a fire, which is why straightforward approaches like a straight stream are emphasized in firefighting strategies.