U.S. Army Staff Sgt. Nicolas Chang, 128th Aviation Brigade, Headquarters and Headquarters Company senior supply sergeant, counts face mask at Joint Base Langley-Eustis, Virginia, May 13, 2020. According to guidelines in combating COVID-19, face mask and social distancing is the best way to limit exposure to the virus. (U.S. Air Force photo by Senior Airman Derek Seifert)