Senior Airman Brett House, 388th Maintenance Squadron, shows a completed N-95 style mask created with a 3D printer. The masks are printed with a plastic materiel that can be repeatedly sanitized with alcohol. Each mask is made of three separately printed pieces – the main body, an internal grid and an external cap that holds a filter. Airmen have had to get creative with the rest of the assembly. The filters are individually cut to specifications from home air filters. The straps that secure the masks to the face are cut from elastic cords. Weather stripping is cut and formed around the interior edge of each mask to create a seal. (U.S. Air Force photo by Cynthia Griggs)