<p>A long-range shot, but worthwhile as it shows the three gate-guardian at the Silverbell U.S.Army base adjacent to Pinal Air Park. 
From top to bottom are:-
Bell AH-1S Cobra '67-15471' c/n 20135,
Bell OH-58A Kiowa '70-15143' c/n 40694
and
Bell AH-1F Cobra '0-15255' (66-15255) c/n 20011.
Silverbell Army Heliport, Pinal Air Park, Marana.
Arizona, USA.
</p>
09-2-2014
<bdi><a href="https://www.wikidata.org/wiki/Q33132025" class="extiw" title="d:Q33132025"><span title="photographer from the UK">Alan Wilson</span></a>
</bdi>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ajw1970/13544020674/">Gate guards at Silverbell Army Heliport, Arizona, USA</a>