Ducommun Incorporated announced that Stephen G. Oswald, chairman, president and chief executive officer, has been appointed to The National World War II Museum’s Board of Trustees. Mr. Oswald is one of eight new members appointed to the Museum’s Board of Trustees. The institution’s elected Trustees serve a three-year term, with a current membership of 59 business and philanthropic leaders representing 19 states, the District of Columbia and the United Kingdom.