True or False: Annual briefings are unnecessary for personnel with no violations in a 12-month period.

The correct answer is that annual briefings are necessary regardless of whether personnel have had any violations within the past 12 months. These briefings serve to keep all cleared personnel informed about security requirements, current threats, and proper handling of classified information. Regular training and briefings help reinforce the importance of security protocols and ensure that personnel remain vigilant.

Continuing to provide annual briefings regardless of an individual's violation history fosters a culture of accountability and awareness. The rationale is that security is a continuous responsibility and must be emphasized consistently over time, thereby ensuring that all personnel, regardless of their recent history, are up-to-date on the latest policies and potential risks.

The other options suggest varying scenarios where briefings might be deemed unnecessary, but maintaining a standard annual briefing schedule applies to all personnel with clearances, promoting a consistent approach to security awareness across the board.