Martin XT5M-1 of US Navy.
San Diego Air &amp; Space Museum
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/sdasmarchives/7096831261/in/set-72157629861348693/">https://www.flickr.com/photos/sdasmarchives/7096831261/in/set-72157629861348693/</a>