When an incident is anticipated or occurs the organization with primary responsibility for the incident establishes command by designating the Incident Commander (IC) or Unified Command (UC). Command may need to be transferred to a different IC/UC one or more times over the course of a long duration or increasingly complex incident.

The current command determines the protocol for transferring command. This transfer process should always include a briefing for the incoming IC/UC on all essential information for continuing safe and effective operations. The transfer of command should also be communicated to all incident personnel.