Who is Clinton Caton from Rocket Boys: A Memoir and what is their importance?

Clinton Caton is a Coalwood mine machinist who machines rockets for the rocket boys and their BCMA. Another machinist, Leon Ferro, . Mr. Caton uses red paint to paint Auk XX on one of their rockets, and paints the nose cone as well. He also made many changes to the boys rocket design, upsetting Quentin, including countersinking a rocket nozzle and constructing a flange. Mr. Caton jokes with Sonny by asking him "You think Wernher von Braun could use me down at Cape Canaveral?" Then he tells Sonny that he wouldn't leave, he wouldn't give up the chance to work for Sonny for free. All of the machinists work together and make rockets for the boys. Mr. Caton is one of the men in the machine shop who work desperately to replace Sonny's rocketry exhibit materials after the first ones are stolen at the National Science Fair. When the last rockets are shot off, he and the other machinists are in the crowd, telling rocket-building stories, continuing to support Sonny and the rocket boys.