German Berckmans, a firefighter at the Brussels Fire Department, made two Dollhouses to exercise in using them. The goal is to visualize typical fire behavior and rapid fire progress with real fire and smoke.
Quite often the pictures show a sequence of action and consequence. The opening of a 'door' or 'window' on the first picture and the result on the next picture. It is fair to say that this also happens with real fires if you are not careful about these phenomena.