DISTRIBUTION OF THIS DOCUMENT IS UNLIMITED NATPONAL TECHNICAL

........... w1'4 Information and data contained inthisstdarbseonheiptvillette time of preparation. Because the results m~ay be subject to change and concern only limited aspects of this subject, this document should not be construed to represent the official position of the U. S. Army Material Command. The findings in this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents. Destroy this report when no longer needed. Do not return it to the originator