For immediate release: December 16, 2004

MDA To Provide $24 Million Information Solution For Defence Intelligence Use

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that it has entered into a $24 million agreement to provide an information solution that will allow image products to be distributed to, and exploited by, commercial, defence, and intelligence customers in the U.S and worldwide arena's.

Commented Dan Friedmann, MDA's President and CEO, "By leveraging past experience into next generation programs, we are becoming a leading information solutions provider to monitoring and intelligence markets."

About MacDonald, Dettwiler and Associates Ltd. (MDA)

MDA (TSX: MDA) provides businesses and governments around the world with essential information solutions used for decision making. Operating from offices across Canada, the U.S. and the U.K., MDA is active in data collection, information extraction, and information distribution.

Related Websites:
www.mdacorporation.com


For more information, please contact:

Wendy Keyzer
External Relations
MDA
Telephone: 604-231-2743
E-mail: wendy@mdacorporation.com