A fire department company or a response unit, the members of which are not paid.

Relating to a harmful effect by a poisonous substance on the human body by physical contact, ingestion, or inhalation.

Average height of the surface of the sea for all stages of the tide over a 19-year period.

Legally enrolled firefighter under the fire department organization laws who devotes time and energy to community fire service without compensation other than Worker's Compensation or other similar death and injury benefits.

Temperature to which a specified parcel of air must cool, at constant pressure and water-vapor content, in order for saturation to occur. The dew point is always lower than the wet-bulb temperature, which is always lower than the dry-bulb temperature, except when the air is saturated and all three values are equal. Fog may form when temperature drops to equal the dew point. 

Order given to the airtanker pilot to pick up another load of fire retardant or water and return to the fire.

Assistance in firefighting or investigation by fire agencies, without regard for jurisdictional boundaries.

To search for a small fire by systematically traveling over an area on parallel courses or gridlines.

Any light, mobile unit with limited pumping and water capacity.

Dropping by an airtanker of its entire load of fire retardant at one time.