28th Civil Engineer Squadron secures the base sewer system
Ken Long, an engineering equipment operator assigned to the 28th Civil Engineer Squadron, prepares to be lowered into a confined space on Ellsworth Air Force Base, S.D., May 18, 2021. Safety is required when dealing with a confined space entry and a harness ensures that everyone involved remains safe and secure. (U.S. Air Force photo by Airman 1st Class Jonah Fronk)

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Photo by: Airman 1st Class Jonah Fronk |  VIRIN: 210518-F-GJ133-017.JPG