Johnny Cartwright, 88th Medical Center, simulations operator, shows Lt. Gen. Dorothy A. Hogg, U.S. Air Force Surgeon General a simulated unit of red blood cells used in the patient simulation lab at Wright-Patterson Air Force Base Medical Center, Ohio, May 23, 2019. Hogg toured various locations in the hospital, such as the emergency medicine department, diagnostic imaging, operating room, simulation center, and medical-surgical unit. (U.S. Air Force photo by Michelle Gigante)