Megan Keller, a recovered COVID-19 patient, donates COVID-19 convalescent plasma Aug. 20, 2020, at the Armed Services Blood Bank Center, Joint Base San Antonio-Lackland, Texas. Patients that have recovered from COVID-19 have a higher chance of carrying a concentrated amount of antibodies in their plasma to help other patients that do not. (U.S. Air Force photo by Airman 1st Class Melody B. Bordeaux)