What should be the first action taken by someone first on the scene of an incident?

Establishing command and confirming the location with dispatch is essential as the first action taken when arriving at the scene of an incident. This action sets the framework for the entire emergency response. It ensures that there is a clear authority figure who can coordinate the efforts of all responders, which is vital for an efficient and organized approach to the situation.

When command is established, it allows for effective communication with dispatch, ensuring that all relevant information, including the precise location of the incident, is relayed to additional units and resources. This process is vital for situational awareness and enables responders to work more effectively together.

Additionally, without establishing command first, it could lead to confusion and overlapping responsibilities among responders, which can compromise the safety of both victims and rescuers alike.

While assessing the number of patients and calling for additional resources are critical actions, they are most effective when coordinated under a unified command. Parking as close as possible to the incident, though practical, does not address the need for coordination and communication that establishing command provides.