3. Unified Command
When partners representing multiple jurisdictions or agencies work together to establish the incident objectives, Unified Command is being used.
Explanation:
Unity of command is the concept by which each person within an organization reports to only one designated person.
A unified command allows all agencies with responsibility for the incident, either geographic or functional, to manage an incident by establishing a common set of incident objectives and strategies. Unified command does not mean losing or giving up agency authority, responsibility, or accountability.