SEMBACH, Germany — Representative from the project team perform an inspection of the mechanical systems at Sembach Kaserne Dec. 9, 2011 as part of an extensive energy audit being managed by the U.S. Army Corps of Engineers Europe District. The Sembach installation audit is being conducted as part of an energy master planning project aimed at achieving net-zero energy installation status by 2025. (U.S. Army Corps of Engineers Photo by Philip Cohen)