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Shingo Matsumura, a 35th Civil Engineer Squadron boiler operator, releases steam from a boiler at Misawa Air Base, Japan, Jan. 30, 2017. As steam comes through the gauge it allows technicians to check the pressure of the instrument, ensuring the conditions are not hazardous. The operators use the inspection to analyze the cleanliness of the boilers as well. (U.S. Air Force photo by Airman 1st Class Sadie Colbert)
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