Staff Sgt. Adam Heckmann (right) and Master Sgt. Michael Wilson (left) service the liquid oxygen on an F-15 Eagle on Nellis Air Force Base, Nevada Jan. 19, 2017. The liquid oxygen converts from liquid to gas to supply a the pilot with breathable air. (Air National Guard photo by Master Sgt. William J. Buchanan)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/33252741@N08">The National Guard</a>
2017-01-21 00:00
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