Fire prevention specialist or arson investigator.

A worker on a dozer crew who pulls winch line, helps maintain equipment, etc., to speed suppression work on a fire.

A weather prediction specially prepared for use in wildland fire operations and prescribed fire.

Fog which extends vertically to less than 20 feet.

Intensively trained fire crew used primarily in handline construction (Type-1).

The concentrated foaming agent as received from the manufacturer which, when added to water, creates a foam solution; use only those approved for use in wildland fire situations by the authority having jurisdiction.

Controls the pitch angle of the main (helicopter) rotor blades. Used as primary altitude control.

The visible or measurable physical changes formed by a fire effect or group of fire effects. This can be over a small area or it can include the overall pattern of fire spread as determined by the entirety of fire pattern indicators over a larger area.

Any motorized vehicle designed for or capable of cross-country travel on or immediately over land, water, sand, snow, ice, marsh, swampland, or other terrain.

Any motorized vehicle designed for, or capable of, cross-country travel on or immediately over land, water, sand, snow, ice, marsh, swampland, or other terrain.