Offshore staffHOUSTON – KBR has announced the appointments of Roy Oelking, Dennis Calton, and John Rose to leadership roles. Oelking becomes group president, KBR Hydrocarbons which includes downstream, gas monetization, oil and gas, and technology. Calton becomes president, KBR Oil & Gas to replace Oelking. John Rose moves from president of KBR Hydrocarbons to become executive vice president, KBR Operations. He plans retirement in June 2012. 04/19/2011