Air National Guard senior NCO breaks barriers
Oregon Air National Guard Chief Master Sgt. Kristen Miller pauses for a photograph next to a display of weapons in her work area at the 142nd Fighter Wing, Portland Air National Guard Base, Ore., May 7, 2017. Miller recently was appointed as the first female Chief Master Sergeant Munitions System Specialist Superintendent in the Air National Guard. (U.S. Air Force photo/Tech. Sgt. John Hughel)

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Photo by: Tech. Sgt. John Hughel |  VIRIN: 170507-Z-CH590-212.JPG