U.S. Army Staff Sgt. Nicolas Chang, 128th Aviation Brigade, Headquarters and Headquarters Company senior supply sergeant, and Josh Howe, Central Issue Facility supply technician, load boxes of face mask onto a truck at Joint Base Langley-Eustis, Virginia, May 13, 2020. The cost of each mask is $0.24 and 7.5 million were donated to the U.S. Army by a commercial vendor. (U.S. Air Force photo by Senior Airman Derek Seifert)

Josh Howe, Central Issue Facility supply technician, carries boxes of face mask at Joint Base Langley-Eustis, Virginia, May 13, 2020. A commercial vendor donated 7.5 million masks to the U.S. Army. (U.S. Air Force photo by Senior Airman Derek Seifert)

U.S. Army Staff Sgt. Nicolas Chang, 128th Aviation Brigade, Headquarters and Headquarters Company senior supply sergeant, signs for face mask for his unit at Joint Base Langley-Eustis, Virginia, May 13, 2020. Units that need face mask can file a request through the Central Issue Facility for the required amount. (U.S. Air Force photo by Senior Airman Derek Seifert)

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)