What immediate action should a navy person take if held by civil authorities?

When a navy person finds themselves in a situation where they are held by civil authorities, the most immediate and crucial action is to notify their chain of command. This step is essential because the chain of command is responsible for the welfare and support of their personnel. By informing their superiors, the individual ensures that appropriate actions can be taken on their behalf, including coordination of legal assistance and communication with family. This action also helps maintain the integrity of the military structure and ensures that any necessary resources or support can be mobilized swiftly. While contacting family members, seeking legal representation, or requesting a court hearing may be important later during the legal process, the priority should be to inform the chain of command immediately.