At a recent fire we used foam as a blanket to help smother out the fire and keep it from spreading. Blowin in insulation we pull all we could from the gable end. Then just used our CAFS to lay in a nice easy blanket from the gable end so no to push any burning material further in. Then pushed it from the eves.
The top photo was after the line had been shut down awhile. Notice how the air has built up in the end of the line on reopening. We were letting some one from another dept run the CAFS line to give it a try. We normally bleed it again before starting fire attack again.