LANGLEY AIR FORCE BASE, Va. -- Airman 1st Class Donald Chapman, 1st Inpatient Squadron laboratory technician, draws blood from Capt. Christine Bolton, 1st Fighter Wing Air Force Smart Operations for the 21st Century officer in charge Feb. 18. The laboratory technicians test samples provided by patients for diseases. (U.S. Air Force photo/Airman 1st Class Zachary Wolf)