U.S. Air Force Chief Master Sgt. James Laurent, 35th Fighter Wing command chief, scrapes soot inside the Number 2 boiler water tube at Misawa Air Base, Japan, July 10, 2012. Cleaning inside of the boiler prolongs the lifespan of the boiler and increases energy efficiency. Due to a ballooning utility cost this year, it is important for the base community to remember to keep their thermostat set to 20 C/68 F while at home. (U.S. Air Force photo by Tech. Sgt. Evan Pitcavage)
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