Master Sgt. Tim Thornton walks towards arc welding protection drapes Aug. 7, 2013, at Joint Base Charleston, S.C. The red drapes protect individuals not wearing a welding shield from taking in the intense light emitted during welding produces. Thornton is the NCO in charge of the 437th Maintenance Squadron aircraft metals. (U.S. Air Force photo/Senior Airman Dennis Sloan)

IMAGE IS PUBLIC DOMAIN

This photograph is considered public domain and has been cleared for release. If you would like to republish please give the photographer appropriate credit. Further, any commercial or non-commercial use of this photograph or any other DoD image must be made in compliance with guidance found at https://www.dimoc.mil/resources/limitations, which pertains to intellectual property restrictions (e.g., copyright and trademark, including the use of official emblems, insignia, names and slogans), warnings regarding use of images of identifiable personnel, appearance of endorsement, and related matters.