What needs to be done every year to ensure everyone is just tested at least once?

The requirement to ensure that everyone is tested at least once per year aligns with conducting an end-of-the-fiscal-year unit sweep. This strategy enables a comprehensive review of the personnel to confirm that all members have undergone the necessary testing within that calendar year. It ensures compliance with regulations and standards, thus maintaining operational readiness and accountability among unit members.

Conducting a unit sweep at the end of the fiscal year allows for an organized approach to documentation and assessment, helping to identify any personnel who may have missed their tests throughout the year. This timing is significant as it aligns with annual performance metrics and readiness evaluations essential for proper personnel management and operational effectiveness.

In contrast, while the other options may contribute to training and operational assessments, they do not specifically address the annual requirement for testing all personnel as thoroughly as the end-of-the-fiscal-year sweep.