ARLINGTON, Va., Nov. 8 /PRNewswire-FirstCall/ -- Pepco Energy Services, a subsidiary of Pepco Holdings, Inc.

By Ben Mook While West Africa or Greenland might

Paul J. Wiedefeld, executive director of the Maryland Aviation Administration for the past three years, is stepping down to return to the private sector. Wiedefeld is going to the international consulting firm Parsons Brinckerhoff where he will lead the company's aviation consulting practice.