Personal protective equipment prototypes are displayed on a table at the 60th Aerospace Medicine Squadron, Bioenvironmental Engineering Flight April 8, 2020, at Travis Air Force Base, California. The bioenvironmental engineering flight, 60th Dental Squadron, 60th Air Mobility Wing Phoenix Spark innovation cell and 60th Maintenance Squadron collaborated to design personal protective equipment for David Grant USAF Medical Center. (U.S. Air Force photo by Heide Couch)