Which Restricted Line role is responsible for designing, acquiring, and sustaining naval systems?

• A. Engineering Duty Officer
• B. Public Affairs Officer
• C. Human Resources Officer
• D. Foreign Area Officer

Answer: (A)

The question tests who handles the lifecycle of naval systems—from concept and design through acquisition to ongoing sustainment. Engineering Duty Officers are the engineering-focused specialists in the Restricted Line who apply technical expertise across that entire life cycle. They translate operational needs into concrete designs, oversee the development and production of ships, submarines, weapons, and their subsystems, and then ensure those systems are maintained, upgraded, and kept affordable in-service. This integration of design, procurement, and long-term support is what sets them apart from the other roles: Public Affairs handles communications, Human Resources manages personnel matters, and Foreign Area Officers focus on regional security and diplomacy.