The design of National Institutes of Health approved face shield prior to be being 3-D printed at Yokota Air Base, Japan, April 2, 2020. By producing more than 200 of these face shields, the 374th Maintenance Squadron Fabrications Flight are doing their part to ensure the rest of Team Yokota has the personal protective equipment they need to combat the ongoing COVID-19 pandemic. (U.S. Air Force photo by Staff Sergeant Matthew Gilmore)