A statement of an outcome to be accomplished or achieved. Incident objectives are used to select strategies and tactics. Incident objectives should be realistic, achievable, and measurable, yet flexible enough to allow strategic and tactical alternatives.

The state of the combined factors of the environment that affect fire behavior in a specified fuel type.

A system for, or the act of discovering, locating, and reporting fires from aircraft.

A warm, dry and strong general wind that flows down into the valleys when stable, high pressure air is forced across and then down the lee slopes of a mountain range. The descending air is warmed and dried due to adiabatic compression producing critical fire weather conditions. Locally called by various names such as Santa Ana winds, Devil winds, North winds, Mono winds, etc. 

Act of soaking up and retaining a gas in liquid or in a solid; also retention of radiant energy.

The speed with which a fire moves in a horizontal direction across the landscape, usually expressed in chains per hour or feet per minute.

The relative activity of a fire in extending its horizontal dimensions. It is expressed as rate of increase of the total perimeter of the fire, as rate of forward spread of the fire front, or as rate of increase in area, depending on the intended use of the information. Usually it is expressed in chains or acres per hour for a specific period in the fire's history.

Any wildfire on rangeland.

A constructed building not designed for continuous human occupancy, such as barns, commercial buildings, etc.

A geographical area between two or more jurisdictions into which those agencies would respond on initial attack.