Airman Nathan Hupp, 28th Civil Engineer Squadron heating, venting and air conditioning apprentice, uses a soldering tool during renovations taking place at the Aspen Inn here, Sept. 24. The soldering tool Airman Hupp is using connects circuit settler valves to heating and cooling valves which give rooms the ability to cool down, as well as heat up. (U.S. Air Force photo/Airman First Class Adam Grant)