Who is responsible for properly marking a classified document?

The responsibility for properly marking a classified document falls to the original classification authority (OCA). The OCA is the designated official who has the authority to classify information in the first place and is responsible for determining the appropriate classification level and applying the correct markings to that information. This includes specifying whether the document is classified, assigning a classification level (such as Confidential, Secret, or Top Secret), and ensuring that any necessary caveats or handling instructions are included.

The OCA's role is crucial because improper classification or marking can lead to security breaches or the unauthorized disclosure of sensitive information. By ensuring that documents are correctly marked, the OCA helps maintain the integrity of the classification system and protects national security interests.

In contrast, other officials such as the unit commander, the Director of National Intelligence, and the Chairman of the Joint Chiefs of Staff have broader oversight or leadership roles but do not typically engage in the day-to-day process of classifying or marking documents. Their responsibilities may involve oversight and policy-making rather than the specific task of document marking.