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Call Fighter
Call firefighters respond as needed on a part time basis to all types of emergencies. Call firefighters train with their local engine companies in their districts. Call firefighters are utilized in three different ways. First Responder call firefighter units are those units that are staffed entirely by paid call firefighters. These firefighters respond to all emergency incidents within their jurisdictional areas and are supported by full-time companies from adjoining jurisdictions. "Supplemental" call firefighter units are those units that staff a second engine company from a station that is also staffed by a full-time company. These units respond to all multi-unit responses in their district and cover the station when the career companies are committed. "Augmentation" call firefighters are assigned to an existing career company and respond directly to the scene to augment that company's staffing.


Cellar fire
Cellar fires are difficult to attack directly because firefighters have to pass through the hot gasses and smoke accumulated on the cellar's ceiling to gain access to the cellar space. Cellars typically do not have good emergency egress points, adding to the danger.


Cellar pipe
Cellar Nozzle. A distributing type nozzle that is inserted through an opening in the floor and into the space below, typically a basement or cellar. The nozzle directs a broken stream horizontally, either extinguishing or controlling the fire enough to allow a direct attack to be safely made. Can also be used on top of other containers.


CFA 3-Thread
A type of coupling used by the CFA, it is used mainly on the australian 64mm hose, it provides a very secure coupling, obviously the threading of the coupling is repeated 3 times, it is non-hemaphoradite.


Charged line
Fire hose under pressure from the pump at the engine.


Check valve
See backflow preventer


Chimney fire
Fast and intense fire in a chimney flue in which accumulated creosote and other combustion byproducts ignite.


Class A, B, C, D, K
Classes of fire extinguisher and corresponding type of fire they extinguish.


Closed area
An area in which specified activities or entry are temporarily restricted to reduce risk of human-caused fires.


Closed-circuit SCBA
See SCBA.


Closet hook
Pike pole under 5 ft long


Closet ladder
See Attic ladder.


Closure
Legal restriction, but not necessarily elimination, of specified activities such as smoking, camping, or entry that might cause fires in a given area.


CO2 extinguisher
Fire extinguisher that releases carbon dioxide gas to smother and cool a fire, such as a flammable liquid.


Cockloft
Structural space above ceiling and below rafters, often connecting adjacent occupancies and permitting fire to spread laterally, often unseen.


Cold trailing
A method of controlling a partly dead fire edge by carefully inspecting and feeling with the hand for heat to detect any fire, digging out every live spot, and trenching any live edge.


Collapse zone
The area around a structure that would contain debris if the building were to collapse.


Combination nozzle
A low pressure Fog Nozzle (usually 120 to 150 lbf/in˛ or 820 to 1030 [[kilopascal|kPa)) that can be adjusted to produce a near straight stream. Also commonly referred to as a Taskforce Tip (TFT).


Company
Two or more firefighters organized as a team, led by a fire officer, and equipped to perform certain operational functions. Compare with platoon and unit.


Compartment Fire
An Isolated" fire or a fire which is "boxed in" or "closed off" from the rest of the structure. An example of this is a fire in a room where all the windows and doors are closed preventing the fire from spreading to other rooms.