Medical Lab
ELLSWORTH AIR FORCE BASE, S.D. -- Staff Sgt. Danielle Struss, 28th Medical Group lab technician, analyzes urine samples under a microscope, May 18. Sergeant Struss made several checks for impurities in the urine, such as, minute amounts of sugar, which could indicate a patient has diabetes. (U.S. Air Force photo/Airman 1st Class Anthony Sanchelli)