For immediate release: August 31, 2005

MDA to Develop Rendezvous and Docking Information Solution for Lockheed Martin

Richmond, B.C. - MacDONALD, DETTWILER AND ASSOCIATES LTD. (TSX:MDA ), a provider of essential information solutions, announced today that it has signed an agreement to support Lockheed Martin in developing a new rendezvous and docking solution for use on future space exploration vehicles for NASA. This project is part of NASA's Exploration Systems' "Human and Robotic Technology" Program.

MDA's real-time information gathering solution will enable NASA's future Crew Exploration Vehicle and other Shuttle-follow-on vehicles to perform autonomous rendezvous, including proximity operations and docking. This solution will further bolster MDA's capabilities to participate in future space exploration missions and in-orbit servicing applications.

About MacDONALD, DETTWILER AND ASSOCIATES LTD. (MDA)

MDA provides advanced information solutions that capture and process vast amounts of data, produce essential information, and improve the decision making and operational performance of business and government organizations worldwide.

Focused on markets and customers with strong repeat business potential, MDA delivers a broad spectrum of earth and space based information solutions, ranging from complex operational systems, to tailored information services, to electronic information products.

MDA employs more than 2,500 people in locations across the United States, the United Kingdom, and Canada. The Company's common shares trade on the Toronto Stock Exchange under the symbol TSX:MDA.

Related Websites:
www.mdacorporation.com
www.lockheedmartin.com/