Rank insignia of Squadron Leader for the Pakistan Air Force
<a href="//commons.wikimedia.org/wiki/User:Skjoldbro" title="User:Skjoldbro">Skjoldbro</a>
CC BY-SA 4.0
<a rel="nofollow" class="external text" href="http://www.paf.gov.pk/ranks.html">Official source</a>