The “Three Cs of incident command” are Communicate, Coordinate and Control.
Communication is clear, concise, and complete. It must follow the communication order model (Ready, Recieve, Repeat) and focus on either Task, Location, Objectives (Units/groups) or Leaders Intent (Divisions/Branches/groups) on incidents.
Coordinate means to focus and coordinate all resources towards one Incident Action Plan. The initial incident commander must conduct an appropriate size-up, review of the incident and ensure the IAP effectively address operations.
Control means the incident commander must exert a positive influence on incident operations and resources, safety hazards and the incident environment (such as keeping civilians and vehicles clear and providing scene lighting and logistical needs).