Answer: NIMS management characteristic Accountability is there in this situation.
Explanation:
The National Incident Management system controls major incidents and coordinates with the person to overcome such incidents based on some management characteristics. Accountability is one such characteristic where the check-in and check out are included.
Therefore, in the above situation, the Principle of Accountability is the management characteristic. According to the principle of Accountability, the manager is responsible to coordinate with the resources. It includes, checks in and check- out, personal responsibility, unity of command, etc.