Welder Darren Raines watches the F118 turbine frame welding process that uses adjustable, encircling copper to deliver even heat in the tight area. When a costly and time-consuming process yielded only a 7 percent success rate, a team of welders at Tinker Air Force Base, Okla., found a solution that earned praise from the Air Force, commercial and international entities. (Air Force photo by Margo Wright)