What command framework is essential for coordinating actions across multiple responding agencies during a major incident?

• A. Incident command by the primary agency only
• B. Ad hoc coordination without formal structure
• C. Establish a unified command structure and interoperable radio channels
• D. Sole agency control by the incident commander

Answer: (C)

Coordinating actions across multiple responding agencies during a major incident requires a unified command structure paired with interoperable radio channels. A unified command brings fire, police, EMS, and other agencies into one command with shared goals, a common incident action plan, and clear roles, so decisions are coordinated rather than competing. Interoperable radio channels ensure real-time, reliable communication across diverse agencies and equipment, eliminating silos and enabling rapid resource requests, situational updates, and synchronized tactics. Together, these elements create a single operating picture and cohesive response, which is essential for effective management of large-scale incidents. Relying on a single agency’s authority, ad hoc coordination, or one agency’s control undermines cross-agency collaboration, accountability, and communication.