Final answer:
The Incident Commander is the first component of the ICS and is the only position that must always be staffed. They are in charge of the overall incident management.
Step-by-step explanation:
The first component of the Incident Command System (ICS) and the only position that must always be staffed is the Incident Commander. The Incident Commander is responsible for all aspects of the response, including developing objectives, planning strategies, and implementing tactics. Even in small-scale incidents or events that require a limited response, an Incident Commander must be designated to ensure there is a clear chain of command and that the incident is managed effectively.