U.S. Air Force Airman 1st Class Austin Sanders, 88th Diagnostics and Therapeutics Squadron Clinical Laboratory Phase 2 Student, times a blood rotator inside the hematology laboratory at Wright-Patterson Air Force Base Medical Center, June 26, 2017. The blood rotator effectively keeps biological samples in constant motion, keeping the sample thoroughly mixed and suitable for testing. (U.S. Air Force photo by Michelle Gigante)