Define "Operations Security" (OPSEC).

Operations Security (OPSEC) refers specifically to the measures and practices implemented to protect sensitive information from unauthorized access or disclosure. This concept is crucial for maintaining the integrity and security of operational capabilities, as it helps prevent adversaries from gaining insight into an organization's intentions, capabilities, and activities. By identifying and mitigating potential vulnerabilities, OPSEC ensures that critical information remains secure, thereby safeguarding both personnel and mission success.

The other options focus on different aspects unrelated to operational security. Strategies for public outreach and communication pertain to how information is shared with the public, while report generation on past missions deals with documentation and analysis of completed operations. Assessment of personnel performance evaluates individual contributions and effectiveness, which is unrelated to the protection of sensitive information. Thus, the correct answer highlights the essential goal of OPSEC in maintaining the confidentiality and integrity of crucial operational information.