Preventive maintenance is planned maintenance, so the subsystem that handles the planning, scheduling, and recording of those tasks is the Planned Maintenance System. This system contains the maintenance requirements and PM schedules, tracks due dates, and records when PM tasks are completed. It provides the central place to see what preventive work is due, what has been done, and what remains outstanding, keeping equipment readiness on track. Scheduling is the function that determines when tasks should run, but the actual tracking of the preventive maintenance itself—what needs to be done and when—lives in the Planned Maintenance System. The other subsystems support different aspects: the Maintenance Data System stores maintenance data, and Configuration Status Accounting tracks the equipment’s status and configuration, while Scheduling handles timing and sequencing.

Unrestricted Line officers are the ones who can lead at sea and pursue combat warfare qualifications. They’re not limited to shore-based or purely staff roles; instead, they are assigned to ships, submarines, or aviation units and can move into afloat command positions. The ability to command a ship or submarine and to earn warfare insignia such as Surface Warfare, Submarine Warfare, or Aviation Warfare defines this group. That’s why describing them as able to command ships and eligible for combat warfare specialties is the best answer.

Cadence of performance counseling and reporting. The Navy uses a two-touchpoint cycle to document an officer’s performance: mid-term counseling and a formal annual report. Mid-term counseling gives timely feedback halfway through the reporting period so the officer can make course corrections, while the annual report captures performance for the entire period and supports decisions on promotion, selection, and rating. Because the minimum standard is those two events, this combination best aligns with how performance is tracked and developed. Some rates or ranks may have variations in the exact timing, hence the note that it is rate/rank dependent. Frequent intervals like weekly, monthly, or quarterly are not the standard for the officer evaluation cycle and would add unnecessary administrative burden.

The Official Military Personnel File is the official record of a service member’s career, gathered and kept up to date by personnel offices from multiple sources. It contains documents that document every part of the career that could affect progression, assignments, and retirement decisions, including promotions, duty assignments, performance evaluations, education and training certificates, awards and decorations, and any personnel actions or disciplinary actions. Because it consolidates all of these areas, it goes far beyond a single category like pay records, training certificates, or medical records. For example, a promotion may rely on fitness reports, coursework completed, and awards—all of which would appear in the file—so boards and commands have a complete, official view of the career.