Tech. Sgts. Richard Williams and Justin Stoltzfus, 18th Civil Engineer Squadron Heating, Ventilation and Air Conditioning shop technicians, provide Maj. Gen. Timothy A. Byers, Air Force Civil Engineer, and Chief Master Sgt. Pat Abbott, Office of the Civil Engineer, chief of enlisted matters, an overview of the shop's Air Force Smart Operations for the 21st Century initiative during Byers' and Abbott's visit to Kadena Air Base, Japan, in July. The AFSO21 initiative invested $16 million in 43 state-of-the-art split-unit chiller systems, extending service life 300 percent and saving over $60 million in lifetime energy and replacement costs. (U.S. Air Force photo/Airman 1st Class Jarvie Z. Wallace)
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