Ensign of the Nigerian Air Force.
<b><a href="//commons.wikimedia.org/wiki/User:Fry1989" title="User:Fry1989"><span style="color:#003384;">Fry1989</span></a> <sup><a href="//commons.wikimedia.org/wiki/User_talk:Fry1989" title="User talk:Fry1989"><span style="color:#cc111a;">eh?</span></a></sup></b>
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<span class="int-own-work" lang="en">Own work</span>