One of their 'desert brown' machines operating from the international airport at Houston.  It is now stored.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/16283556859/">Southwest B737-300 N332SW at IAH</a>