The incident commander at the time the first attack forces commence suppression work on a fire.

An externally threaded hose nipple which fits in the thread of a female (internally threaded) swivel coupling of the same pitch and diameter. Nozzles attach to this type of coupling.

The range of possible values for a fire danger index or component, given a set of NFDRS parameters and weather input.

A hose coupling with one or more cylindrical studs on its outside rim. The studs allow the use of a spanner wrench to tighten the coupling.

The process by which a gas becomes a liquid.

Any road or trail formed by the process of skidding logs from stump to landing.

Device used to transport a 55-gallon drum (208 L) via sling on a helicopter.

Agency with primary responsibility for fire suppression on any particular land area.

Official group or organization compelled and authorized under statutes or law to control fires within a designated area or upon designated lands.

The agency responsible for providing direct incident management and services to a given area pursuant to its jurisdictional responsibility or as specified by law, contract or agreement.