Each reel or tape has frames at the beginning and end with titles bearing the appropriate classificaton markigs. The reel or cassette and the container are also marked with appropriate markings.
Graydon J. Gerber, Naval Ocean Systems Center (NOSC,) San Diego, California.
<a rel="nofollow" class="external text" href="http://www.dtic.mil/dtic/tr/fulltext/u2/a200314.pdf">Security Is Everybody's Business</a> (Technical Document 490, Revision <i>B</i>,) page A-25.