MDA To Support Arctic Surveillance By National Defence

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that it has signed a contract for CAD $2.8 million with the Canadian Department of National Defence to conduct the Definition Phase for project Polar Epsilon. Polar Epsilon is a CAD $60 million planned project for space-based, day and night surveillance of Canada's Arctic and its ocean approaches.

Polar Epsilon will use essential information collected by MDA's advanced RADARSAT-2 satellite mission. The Definition Phase will define the system requirements and design of two new RADARSAT-2 satellite ground stations. When the main phase of the project proceeds, the stations will be built and installed on both the east and west coasts of Canada in advance of Polar Epsilon becoming operational. The scope of the contract also includes the definition of an information solution to control the specialized RADARSAT-2 maritime surveillance beam capability for the purpose of ship detection.

David Hargreaves, vice president within MDA's Information Systems group said, "We are very pleased to be the primary information solution partner for Polar Epsilon. The planned use of MDA's RADARSAT-2 data and systems by the Department of National Defence has the potential to dramatically improve Canada's ability to monitor its vast ocean approaches and remote Arctic regions."

About 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 3,000 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.forces.gc.ca/

Forward-Looking Statements

This release contains forward-looking statements and information, which reflect the current view of MacDonald, Dettwiler and Associates Ltd. with respect to future events and financial performance. Any such forward-looking statements are subject to risks and uncertainties and MDA's actual results of operations could differ materially from historical results or current expectations. Additional information on these and other potential factors that could affect MDA's financial results are detailed in documents filed from time to time with the applicable Canadian securities regulatory authorities.

The Toronto Stock Exchange has neither approved nor disapproved the form or content of this release.