LANGLEY AIR FORCE BASE, Va. -- Airman 1st Class Ashley Lemley, a lab technician at the 1st Fighter Wing Hospital, holds up a blood agar plate covered with the bacteria staphylococcus aureus July 16. Lab technicians perform tests and cultures on specimens and process the results for doctors. (U.S. Air Force photo/Airman 1st Class Sylvia Olson)