Senior Airman Brittany Harrell-Dye, 28th Medical Support Squadron medical laboratory technician, extracts blood from Tech. Sgt. Benjamin McReynolds, 28th MDSS NCO in charge of clinical laboratory at Ellsworth Air Force Base, S.D., Oct. 7, 2014. On average, the lab analyzes samples of more than 100 active-duty military members and their dependents each day. (U.S. Air Force photo by Senior Airman Zachary Hada/Released)