James A. Callahan, Jr. has been promoted to vice president of marketing by Constellation Real Estate, Inc. Callahan has more than 13 years of management experience in commercial real estate, most recently as Constellation's assistant vice president for marketing and leasing, and previously at Creaney & Smith and Colliers Pinkard. He will focus on land sales and development in the Baltimore/Washington DC region. He holds a Bachelor of Arts degree in political science from Washington College of Maryland and is a member of the National Association of Industrial and Office Parks. By: Ronald McCoy (12/18/1998)