Paul Ross, 509th Civil Engineer Squadron central heat plant project manager, and John Goff, 509th CES boiler operator, discuss a centrifugal pump's operational procedures, Aug. 27. The 50-horsepower pump is used to distribute water for use in the heat plant's boilers. (U.S. Air Force photo/Senior Airman Nick Wilson)
Staff Sgt. Nicholas Wilson
<a rel="nofollow" class="external free" href="https://www.dvidshub.net/image/807960">https://www.dvidshub.net/image/807960</a>