What is a key guideline to follow while using an exterior fire stream?

Using an exterior fire stream effectively requires careful consideration of how water is applied to minimize potential hazards and maximize extinguishing capabilities. Avoiding the whipping of the hose stream is important because it helps to reduce the creation of steam. When water is whipped or directed erratically, it can lead to the generation of steam, which can be hazardous to both firefighters and victims. This steam buildup can obscure visibility, create scalding conditions, and hinder effective firefighting efforts.

By keeping the stream steady and avoiding excessive movement, firefighters can ensure that the water reaches the intended target efficiently, soaking the fuel and cooling the fire without creating unnecessary steam. This approach not only enhances safety but also improves the overall effectiveness of the firefighting operation.

The other options do not align with the principle of minimizing steam or ensuring effective application of water. For example, directing water straight at the fire without considering angles may lead to ineffective coverage and could also contribute to steam hazards if the water is overly concentrated in one area.