This publication is a security overview. It supersedes the NELC pamphlet “Security Is Everybody’s Business” and NOSC Technical Document 490, Revision A, “Security Training.” It provides basic security principles and procedures to ensure uniformity and effectiveness in implementing the Naval Ocean Systems Center’s security program. Note: All classification markings on sample documents contained herein are for training purposes only;

ՆկարագրումCommonly used secrecy markings.png	English: These are additional markings commonly used on classified material. The appropriate markings are placed on the front cover of a document or on the first page if there is no cover. The markings serve to notify and warn the holder of special requirements for protection of the information and must be prominently placed on documrents, on material itself, if feasible, or in accompanying documentation.
Թվական	Օգոստոս 1988
Աղբյուր	Security Is Everybody’s Business (Technical Document 490, Revision B,) page A-14.
Հեղինակ	Graydon J. Gerber, Naval Ocean Systems Center (NOSC,) San Diego, California.
Իրավունքներ (Նիշքի վերաօգտագործումը)	Public domainPublic domainfalsefalse This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States. This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse This file, which was originally posted to dtic.mil, was reviewed on 9 February 2013 by reviewer McZusatz, who confirmed that it was available there under the stated license on that date.
Այլ մեկնակերպներ	Classified document with front and back covers Classified document without covers