KADENA AIR BASE, Japan -- Staff Sgt. Timothy Allen and Staff Sgt. Warner Houston, 18th Civil Engineer Squadron control shop heating, ventilation, air conditioning and refrigeration craftsmen, review data collected by new electric meters installed on 150 buildings across Kadena recently. The meters are connected wirelessly to a control point where 18th CES can access and review transmitted data on energy use around the base. (U.S. Air Force photo/ Airman 1st Class Tara A. Williamson)