U.S. Air Force Staff Sgt. George Egan, 7th Medical Support Squadron noncommissioned officer in charge of chemistry, looks over parts in a chemistry analyzer in the laboratory at Dyess Air Force Base, Texas, Nov. 29, 2018. The machine is used to analyze many samples, such as blood, and read the components within them which helps give an accurate reading for laboratory technicians. (U.S. Air Force photo by Airman 1st Class Mercedes Porter)