LAJES FIELD, Azores -- Tech. Sgt. Melanie Curtis, a laboratory technician with the 434th Aerospace Medicine Squadron at Grissom Air Reserve Base, prepares a "Strep A" culture at the medical clinic laboratory, Lajes Field, Azores. Tech. Sgt. Curtis was one of 12 members of the 434th AMDS that completed their annual two week tour at Lajes Field. (U.S. Air Force photo/Staff Sgt. Darrell I. Dean)