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 or approval of the use of 

 such commercial products. 



