This document is of the utmost urgency. Access to it is strictly limited to cleared personnel only. Any disclosure of this content could have grave {consequences|. Failure to comply with these directives will result in administrative action. Utterly Confidential This information is/remains/constitutes strictly confidential and should/must/ought

This project/initiative/operation is of paramount importance to national security. To gain access/participate/be involved, you must possess/require/need a valid Top Secret clearance with appropriate compartments/designations/access levels. Only cleared personnel/individuals with authorization/those possessing the necessary clearance will be permitt