R-11 Refueler with a fuel capacity of 6000 Gallons, manufactured by Kovatch. Used by the U.S. Air Force.
<a href="//commons.wikimedia.org/wiki/United_States_Air_Force" title="United States Air Force">United States Air Force</a> (Media ID: 090628-F-6967G-035)
<p><a href="//commons.wikimedia.org/wiki/United_States_Air_Force" title="United States Air Force">United States Air Force</a>
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