MDA to provide Government of Canada a broad-area maritime surveillance system using RADARSAT-2 capabilities

MacDonald, Dettwiler and Associates Ltd. a provider of essential information solutions, announced today it has signed a $25 million (CAD) contract with the Government of Canada to provide the Department of National Defence (DND) with a comprehensive broad-area maritime surveillance solution based on MDA's RADARSAT-2. In June 2007, MDA received a contract for $2.8 million (CAD) to conduct the Definition Phase for project Polar Epsilon, and the award of this $25 million contract initiates the Implementation Phase of this maritime and Arctic surveillance project.

Polar Epsilon is a project targeted to deliver space-based, day and night, all-weather maritime surveillance information of Canada's Arctic and its ocean approaches, and includes global high-resolution surveillance capabilities to support deployed Canadian Forces. Polar Epsilon will monitor vessels within Canadian and international waters using MDA's RADARSAT-2. MDA's solution will significantly enhance MDA's existing ship detection capabilities through an on-orbit upgrade of RADARSAT-2's imaging capabilities. The solution will also include east and west coast real-time ground systems and an advanced ship information extraction system to exploit the new data.

For further information about Polar Epsilon, please see the backgrounder, available on the DND website at: http://www.forces.gc.ca/site/news-nouvelles/news-nouvelles-eng.asp?cat=2

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 information solutions, ranging from complex operational systems, to tailored information services, to electronic information products.

MDA employs more than 3,200 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
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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.