A Final Note
(From the NSA Handbook)

The information you have just read is designed to serve as a guide to assist you in the conduct of your security responsibilities. However, it by no means describes the extent of your obligation to protect information vital to the defense of our nation. Your knowledge of specific security regulations is part of a continuing process of education and experience. This handbook is designed to provide the foundation of this knowledge and serve as a guide to the development of an attitude of security awareness.

In the final analysis, security is an individual responsibility. As a participant in the activities of the National Security Agency organization, you are urged to be always mindful of the importance of the work being accomplished by NSA and of the unique sensitivity of the Agency's operations.