Specialized trailer on which is mounted a tank, fire pump, hose, and ancillary equipment.

Airtanker drop in which tank doors are opened in sequence so that fire retardant cascades somewhat continuously.

A branch within the logistics section responsible for service activities at the incident. Includes the communications, medical and food units.

A situation that taxes an operational system to the limit of its functional capabilities. Such as too many fires for an individual unit to handle (fire overload), or too many orders for an individual dispatch center to process (dispatch overload).

Wind flowing parallel to pressure isobars or contours with low pressure on the left of the observer in the Northern Hemisphere; velocity such that the pressure gradient, Coriolis, and centrifugal force acting in the area are in balance.

A branch within the logistics section responsible for providing personnel, equipment and supplies to support incident operations. Includes the supply, facilities and ground support units.

Detailed information needed to complete each task including step-by-step explanations, checklists, diagrams and other relevant information. Job aids are for use by trainees as an on-the-job training tool and as a field operational tool for qualified personnel.

The maximum geographic limits of spread within which a wildland fire is allowed to spread.

Any vehicle capable of transporting a specified number of personnel in a specified manner.

Maximum external stress load (in pounds) with full fuel and pilot in calm air at standard atmospheric temperature.