Destroy this report when no longer needed. Do not return 
it to the originator. 
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. 
The contents of this report are not to be used for 
advertising, publication, or promotional purposes. 
Citation of trade names does not constitute an 
official endorsement cr approval of the use of 
such commercial products. 
