U.S. Air Force Senior Airman Mark Murray, 354th Civil Engineer Squadron heavy equipment operator, builds dikes with a front end loader during a Pacific Air Forces Readiness Focused Consolidated Unit Inspection at Bear Lake snow dump, Sept. 12, 2013, Eielson Air Force Base, Alaska. The exercise tested the 354th CES Dirt Boys ability to contain a simulated sewage line break. (U.S. Air Force photo by Airman 1st Class Peter Reft/Released)