Brand of wind-up, fire alarm telegraph system for sending coded pulses to alert central alarm station of fire alarm activation; often still found in red boxes on street corners.

See also Hydrant Gate". Valve in which the shutoff device slides across the flow of liquid to obscure the orofice usually activated by a screw mechanism. Compare "ball valve.

Brand of specialized vehicle extrication tool, most notably including a glass cutting saw for removal of automobile windshields.

An incident with persons reported.

Gallons Per Minute or how many gallons are being pumped out of a piece of equipment every minute

Calculation of how much water, in GPM, will be necessary to extinguish a given volume of fire, under the circumstances (e.g., fuel class, containment, exposures, etc.).

Water storage tank for fire protection; arranged above protected area to provide flow of water by gravity when needed.

A fire involving any manner of cooking oil or other flammable cooking or lubricating materials.

Fire that consumes the organic material beneath the surface litter ground, such as peat fire.

A portable ladder designed to rest on the ground. Compare aerial ladder and roof ladder.