Firehouse dog.

A load of hose on a pumper, but not connected to a pump outlet. Often used for larger supply lines.

Unburnt areas around edges of brush fire.

A master stream device mounted to top deck of pumper.

An explosion with a propagation front traveling at subsonic speeds, as compared to supersonic detonation.

A master stream device that can be positioned on the ground based on the need of the incident commander.

Type of sprinkler system in which sprinkler heads do not have individual valves, and the water (or other extinguishing agent) is disbursed from all sprinkler heads simultaneously when a central (or zoned) valve is triggered by a sensor (or manually). Typically reserved for industrial areas where rapid fire spread must be prevented at the cost of damaging non-burning materials.

Demobilization, or a crew being removed from working a fire.

Heavy pry bars connected with a hinge, one with an adjustable foot, used for prying open doors.

A combination axe, sledgehammer, pry tool, ram, and D-handle pull tool used to gain forcible entry to buildings, automobiles, etc. during emergency situations.

See Alarm system.

See Aqueous Film Forming Foam.

Any treatment applied directly to burning fuel such as wetting, smothering, or chemically quenching the fire or by physically separating the burning from unburned fuel.

Putting the wet stuff on the red stuff." A form of fire attack in which hoses are advanced to the fire inside a structure and hose streams directed at the burning materials.

The amount of water flowing from a fire hydrant when it is opened; compare to static flow and residual flow.

Refers to person or place designated for handling a call for help by alerting the specific resources necessary.

Portion of fire hydrant or sprinkler system connecting main loops to smaller loops where outlets are located.

Firehose adapter for connecting two male" couplings together; may also adapt different sizes on either side.

Hose coupling adapter with two male-threaded connectors back-to-back; used for connecting two female couplings together.

Fireline constructed by the front blade of a bulldozer or any tracked vehicle with a front mounted blade used for exposing mineral soil. Also catline.