An inclusive term for all constructed or natural barriers and treated fire edges used to control a fire.

A formal investigation team that is organized with the purpose of conducting an accident investigation for an occurred serious accident. The team is given full authorization to conduct the investigation from involved agencies through letter of delegation. 

Naturally or artificially ventilated structure, constructed to specifications and used to shield weather measuring instruments from direct sunshine and precipitation.

Apparatus utilizing an air compressor and positive displacement pump coupled to the same engine, plumbed to a non-pressurized tank, for producing foam. The operation involves injecting compressed air into a liquid stream containing a suitable foaming agent.

Apparatus utilizing a pressurized tank, hose, and nozzle for producing foam by injection of compressed air or gas into a liquid stream downstream from the pumping source. The liquid stream must contain a suitable foaming agent.

With respect to maintenance time records, the time from the moment an aircraft leaves the surface of the earth until it touches at the next point of landing.

A capability through the use of a special mobile ground station to receive air-to-ground IR imagery at an incident.

Deploying and directing resources on an incident to accomplish the objectives designated by strategy.

Ignition and subsequent envelopment in flames, usually from bottom to top, of a tree or small group of trees.

Device for throwing a stream of flaming liquid, used to facilitate rapid ignition during burn out operations on a wildfire or during a prescribed fire operation.