341st OMRS, 819th RED HORSE conduct final swipe on density gauge
Airman 1st Class Raul Rodriguez, 341st Operational Medical Readiness Squadron bioenvironmental engineer apprentice, conducts a radiation swipe test on a density gauge April 6, 2021, at Malmstrom Air Force Base, Mont. The density gauges use radiation to measure which areas need foundation during construction of buildings, and assisted in the construction of an F-22 Raptor maintenance hangar at Luke Air Force Base, Ariz. (U.S. Air Force photo by Senior Airman Tristan Truesdell)

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Photo by: Senior Airman Tristan Truesdell |  VIRIN: 210406-F-BG120-0054.JPG