Who is responsible for any function or job not explicitly assigned at an incident?

The Incident Commander is responsible for any function or job not explicitly assigned at an incident because this role encompasses overall leadership and accountability during an incident response. The Incident Commander has the authority to make decisions across various operational areas and is tasked with ensuring that all necessary functions are covered. If a specific task or role has not been assigned, it falls to the Incident Commander to either delegate that responsibility or to take it on themselves to ensure that all aspects of the incident response are managed effectively. This centralization of command allows for a cohesive strategy and effective resource management during an incident, ultimately aiming for the successful resolution of the situation at hand.