What does "unity of command" refer to in incident management?

Unity of command in incident management refers to the principle that each individual involved in an incident response reports to one supervisor. This structure is crucial because it establishes a clear chain of command that enhances communication and accountability. When all personnel have a single point of authority, it reduces confusion and ensures that everyone understands their responsibilities and tasks. This clarity helps streamline decision-making processes and coordination among various units and personnel.

The other options do not align with the definition of unity of command. Recording actions, deploying command staff together, and the requirement for all units to arrive on scene simultaneously pertain to different aspects of incident management but do not establish the essential framework of reporting to one designated supervisor, which is at the heart of unity of command.