When is it appropriate to use exterior to interior fire streams?

Using exterior to interior fire streams is appropriate when the fire can be attacked from exterior openings. This method allows firefighters to effectively reach and suppress the fire from the outside, minimizing risk to personnel and maximizing the impact of the water or suppression agent used. It is particularly useful in situations where interior access is limited due to heavy smoke, heat, or structural instability.

Attacking the fire through openings like windows or doors helps control the spread of the fire while also allowing for smoke and heat to vent, creating a safer environment for both firefighters and potential victims inside. This tactic also protects the structure by reducing the temperature and intensity of the fire from the outside before moving further in.

In contrast, other scenarios such as a fire that has completely engulfed a structure may render exterior streams less effective, as the fire's intensity could create barriers to effective suppression and increase risks. Severe weather conditions can complicate firefighting efforts, potentially leading to less favorable outcomes if using exterior streams. Lastly, if interior crews are not present, it may necessitate a different strategic approach, as relying solely on exterior streams might not address the situation adequately. Thus, the proper tactical approach heavily depends on the circumstances surrounding the fire incident, where attacking from points of entry is the best strategy when