Master Sgt. Michael Howard, aircraft metals technician 911th Maintenance Squadron fabrication flight, uses a computer-aided design program to send a CAD file of an aircraft part file to a 3D printer for production at the Pittsburgh International Airport Air Reserve Station, May 10, 2021. The use of 3D printing for prototyping and testing C-17 Globemaster III aircraft parts allows the shop to reduce precious metal material waste and increase productivity by freeing up production machine time. (U.S. Air Force photo byTech Sgt. Richard Kaulfers)