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I

I/I - Intelligence/Investigations

Efforts to determine the source or cause of the incident (e.g., disease outbreak, fire, complex coordinated attack, or cyber incident) in order to control its impact and/or help prevent the occurrence of similar incidents. In ICS, the function may be accomplished in the Planning Section, Operations Section, Command Staff, as a separate General Staff section, or in some combination of these locations.

IAP – Incident Action Plan

An oral or written plan containing the objectives established by the IC or UC and addressing tactics and support activities for the planned operational period, generally 12 to 24 hours.

IC - Incident Commander

The individual responsible for all on-scene incident activities, including developing incident objectives, strategies and ordering and releasing resources. The IC has overall authority and responsibility for conducting incident operations and is responsible for the management of all incident operations at the incident site.

ICP – Incident Command Post

The field location where the primary functions of incident command are performed. The ICP may be co-located with the Incident Base or other incident facilities.

ICS - Incident Command System

A standardised approach to the command, control, and coordination of on-scene incident management, providing a common hierarchy within which personnel from multiple organisations can be effective. It is designed to provide an integrated organisational structure that reflects the complexity and demands of single or multiple incidents, without being hindered by jurisdictional boundaries. ICS is the combination of procedures, personnel, facilities, equipment, and communications operating within a common organisational structure, designed to aid in the management of on-scene resources during incidents. It is used for all kinds of incidents and is applicable to small, as well as large and complex, incidents, including planned events. ICS is used by various jurisdictions and functional agencies, both public and private, to organise field-level incident management operations.

IDPs

Internally Displaced Persons

IMT - Incident Management Team

A rostered group of ICS-qualified personnel consisting of an IC, Command and General Staff, and personnel assigned to other key ICS positions.

Incident

An occurrence, natural or human-caused, that requires a response to protect life or property. Incidents can, for example, include major disasters, emergencies, terrorist attacks, terrorist threats, civil unrest, wildland and urban fires, floods, hazardous materials spills, nuclear accidents, aircraft accidents, earthquakes, hurricanes, tornadoes, tropical storms, tsunamis, war-related disasters, public health and medical emergencies, and other occurrences requiring an emergency response. In NIMS, the word “incident” includes planned events as well as emergencies and/or disasters of all kinds and sizes.

Incident Base

A location where personnel coordinate and administer logistics functions for an incident. There is typically only one base per incident. (An incident name or other designator is added to the term Base.) The ICP may be co-located with the Incident Base.

Incident Command

The ICS organisational element responsible for overall management of the incident and consisting of the IC or UC any additional Command Staff activated.

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