Smoldering Fire A fire burning without flame and barely spreading.
Spark Arrester A device installed in a chimney, flue or exhaust pipe to stop the emission of sparks and burning fragments.
Spot Fire A fire ignited outside the perimeter of the main fire by flying sparks or embers.
Spotting Behavior of a fire producing sparks or embers that are carried by the wind and start new fires beyond the zone of direct ignition by the main fire.
Structural Fire Engine Company Firefighters assigned to an engine for structural fire purposes.
Structure Fire Fire originating in and burning any part or all of any building, shelter or other structure.
Suppressant An agent, such as water or foam, used to extinguish the flaming and glowing phases of combustion when directly applied to burning fuels.
Suppression All the work of extinguishing or containing a fire, beginning with its discovery.
