<p>A pair of 21FS aircraft on apporach to their home base.
The leader is 93-0708, c/n TA-7 (Taiwanese serial 6607),
trailing is 93-0711, c/n TA-10. This carries special markings '21FS' relating to their operating unit. 
Luke AFB, Arizona, USA.
</p>
13-2-2014
<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/ajw1970/13914850295/">General Dynamics F-16A '93-708 / LF' &amp; '93-711 / 21FS / LF'</a>