Secretary of the Air Force Barbara Barrett briefed about altitude chambers used by the U.S. Air Force School of Aerospace Medicine, shown to her at Wright-Patterson Air Force Base, Ohio, April 21, 2020. USAFSAM has maintained training protocols with the centrifuge throughout the COVID-19 pandemic. Barrett met with Air Force personnel and toured several facilities at the base including the U.S. Air Force School of Aerospace Medicine Epidemiology Laboratory, which is responsible for analyzing a majority of the COVID-19 tests in the Air Force. (U.S. Air Force photo by Ty Greenlees)