In WIMS, a one-digit number representing the number of decision points used to evaluate the magnitude of the Staffing Index.

Setting fire inside a control line to consume fuel located between the edge of the fire and the control line.

Any real or potential condition that can cause injury, illness or death of personnel, or damage to, or loss of equipment or property. The root cause of an unwanted outcome.

Any excess personal property not required for the needs and the discharge of the responsibilities of all federal agencies as determined by the General Services Administration (GSA).

The capability to move, position, and utilize established forces to meet existing and anticipated fire protection needs nationwide.

The front that is formed when and where a cold front overtakes a warm front or a stationary front.

Maximum distance at which a given object can just be seen by an observer with normal vision.

Behavior of a fire spreading rapidly with a well defined head.

Indicated airspeed of an aircraft, corrected for position and instrument error. Equal to true airspeed in standard atmosphere at sea level.

Liquid phosphate fertilizers used as fire retardants, usually diluted three to five times prior to application.