17th SOS calling card
US Air Force
<a rel="nofollow" class="external free" href="https://media.defense.gov/2012/May/17/2000150926/-1/-1/0/120517-F-DW547-021.JPG">https://media.defense.gov/2012/May/17/2000150926/-1/-1/0/120517-F-DW547-021.JPG</a>