Streams are operated from the exterior of a building at a safe distance. This is an example of which type of attack line evolution?

A defensive attack is characterized by operating fire streams from a safe distance outside the building. This method is typically employed when the interior conditions are too dangerous for personnel or when the fire is too advanced to safely attempt an interior attack. By utilizing a defensive strategy, firefighters aim to protect exposure buildings, control the fire’s spread, and minimize further damage while ensuring their own safety.

In contrast, other types of attack lines such as transitional attacks involve initially using exterior streams to knock down a portion of the fire before transitioning to an interior attack. A combination attack refers to using both interior and exterior streams simultaneously, while a blitz attack is characterized by a rapid, overwhelming application of water on a fire, often from multiple exterior positions. The defensive attack focuses primarily on maintaining safety and controlling the fire from outside, making it crucial in scenarios where a direct attack may not be viable.