Sparks fly at Metal tech.
Airman 1st Class Curtis Doherty, a 374th Maintenance Squadron aircraft metals technology journeyman, sands down part of a tow bar at the fabrication shop at Yokota Air Base, Japan, June 23, 2015. The shop often receives C-130 Hercules exhaust pipes to repair, utilizing the technicians' grinding and welding skills. (U.S. Air Force photo/Senior Airman David Owsianka)