Senior Airman Justin Weeks, 374th Maintenance Squadron aircraft metals technology journeyman, inputs information into the computer numeric controller router to create a C-130 Hercules part in the fabrication shop at Yokota Air Base, Japan, June 23, 2015. Numerical controls the automation of machine tools that are operated by precisely programmed commands encoded on a storage medium. (U.S. Air Force photo by Senior Airman David Owsianka/Released)