Senior Airman Lance Gillenwater, 28th Medical Support Squadron medical laboratory technician, examines a smeared blood slide in the clinical laboratory at Ellsworth Air Force Base, S.D., April 19, 2013. On average, the lab reviews samples of more than a 100 active-duty military members and their dependents each day. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)