U.S. Air Force Senior Airman Joseph Lagrow, 354th Civil Engineer Squadron waste water treatment plant operator, scoops the top layer of sludge out of a distribution box June 1, 2012, Eielson Air Force Base, Alaska. The boxes are cleared daily to ensure they evenly distribute the flow into clarifiers.
Senior Airman Janine Thibault
Taken on 1 June 2012
<a rel="nofollow" class="external free" href="https://www.dvidshub.net/image/615416">https://www.dvidshub.net/image/615416</a>