What should not be publicly disseminated to protect critical information?

Photographs displaying critical information should not be publicly disseminated because they can reveal sensitive details that could be exploited by adversaries. Such images may contain identifiable features, capabilities, or locations that are important from a security standpoint and could compromise operational effectiveness, safety, or strategic advantages. Protecting critical information is essential in maintaining national security and safeguarding military operations.

Personal opinions, training manuals, and public service announcements may or may not contain sensitive information, but they don't inherently pose the same level of risk as photographs that visibly display critical assets or events. It's crucial to evaluate the nature of the content when determining what to protect, and photographs often contain visual cues that can lead to greater vulnerabilities.