DYESS AIR FORCE BASE, Texas -- Senior Airman Rory Jones, lab technician, checks for clotting in a blood sample at the 7th Medical Group, March 10. The lab technicians are responsible for ensuring the blood is properly mixed and there is enough of a sample for a test. (U.S. Air Force photo by SrA Courtney Richardson)

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Photo by: SrA Courtney Richardson |  VIRIN: 080310-F-2300R-007.JPG