Which of the following is a key responsibility of a Personnel Specialist?

Managing personnel records is a key responsibility of a Personnel Specialist because it involves maintaining accurate and up-to-date information regarding service members. This includes documenting personal information, performance evaluations, promotions, transfers, and other significant events throughout a member's career. This responsibility is crucial as it supports the overall readiness and efficiency of the military, ensures compliance with regulations, and facilitates decision-making regarding personnel management and career progression.

Other options, while important in their respective areas, do not align with the specific role of a Personnel Specialist. Preparing ship designs pertains to engineering and naval architecture, coordinating tactical missions involves strategic planning often handled by those in operational roles, and conducting field training exercises focuses on training responsibilities that fall under military training personnel. Thus, managing personnel records encapsulates the core function of a Personnel Specialist effectively.