The purchase of drilling rig electrical service company Supreme Electrical Service and Supply Co. brought C. Jim Stewart III out the retirement. The great grandson of the founder of Stewart & Stevenson co-founder C. Jim Stewart, retired from the company in 2003 at the age of 54 as vice president of marketing. He will take over Supreme, a 14-year-old private company that specializes in electrical design and set-up of drilling rigs with annual revenues of US $10 million.