Technical Sgt. Sasha Barker, 90th Ground Combat Training Squadron independent duty medical technician, ties the back of her gown at the 90th Medical Respiratory Clinic on F.E. Warren Air Force Base, Wyo., April 22, 2020. The medics wear personal protective equipment to protect themselves from contracting COVID-19 during tests. (U.S. Air Force photo by Staff Sgt. Ashley N. Sokolov)