The most important task for firefighters is to save lives. In the case of fires in multi-story residential buildings, this objective can be best achieved by using the stairways as the preferred route of attack. This method of entering a multi-story dwelling ensures that the most important escape route for the inhabitants is immediately controlled.
One of the most important aims for fire crews is to have a smoke-free and safe stairway. However, choosing the stairways as the preferred route of attack to a fire in a building means opening doors. Firefighting operations sometimes enable smoke to travel through a building, entering stairways, which can lead to inhabitant endangerment.