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Terms and Definitions

Terms and Definitions

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Incident
A human-caused or natural occurrence, such as wildland fire, that requires emergency service action to prevent or reduce the loss of life or damage to property or natural resources.

Incident Action Plan (IAP)
Contains objectives reflecting the overall incident strategy and specific tactical actions and supporting information for the next operational period. The plan may be oral or written. When written, the plan may have a number of attachments, including: incident objectives, organization assignment list, division assignment, incident radio communication plan, medical plan, traffic plan, safety plan and incident map.

Incident Command Post (ICP)
Location at which primary command functions are executed. The ICP may be co-located with the incident base or other incident facilities.

Incident Command System (ICS)
The combination of facilities, equipment, personnel, procedure and communications operating within a common organizational structure, with responsibility for the management of assigned resources to effectively accomplish stated objectives pertaining to an incident.

Incident Commander
Individual responsible for the management of all incident operations at the incident site.

Incident Management Team
The incident commander and appropriate general or command staff personnel assigned to manage an incident.

Incident Objectives
Statements of guidance and direction necessary for selection of appropriate strategy(ies), and the tactical direction of resources. Incident objectives are based on realistic expectations of what can be accomplished when all allocated resources have been effectively deployed.

Infrared Detection
The use of heat sensing equipment, known as Infrared Scanners, for detection of heat sources that are not visually detectable by the normal surveillance methods of either ground or air patrols.

Initial Attack
The actions taken by the first resources to arrive at a wildland fire to protect lives and property, and prevent further extension of the fire.

Inversion
Under high pressure and stable air conditions, warm air may cap cooler air, forming an inversion that traps smoke in valley bottoms, particularly at night.

Smoke and fire in a stand of trees.

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