Final answer:
The statement is false. Command relationships in PR incidents can vary depending on the specific incident and the need for coordination and collaboration between different entities.
Step-by-step explanation:
The statement that direct command relationships between military commanders and interagency, nongovernmental personnel, and multinational forces are predetermined and established before a PR incident occurs is False.
In reality, command relationships in these situations can vary depending on the specific incident and the need for coordination and collaboration between different entities.
For example, in response to a natural disaster or a humanitarian crisis, military commanders may need to work closely with nongovernmental organizations and multinational forces to provide assistance and coordinate relief efforts.