November 14, 2008

MDA to design and build Canada's RADARSAT Constellation Mission

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX:MDA), a provider of essential information solutions, announced today that it has won the competition to design and build the RADARSAT Constellation Mission (RCM), which will allow for increased surveillance of Canada and its coastal waters. The program will be funded in phases and MDA has just signed a $40 million (CAD) contract to complete the first phase. It will take 16 months to complete and deliver the high level design.

RCM represents a major enhancement of Canada's RADARSAT program, following the successes of RADARSAT-1 and RADARSAT-2. RCM will provide frequent surveillance and monitoring of Canada's coastal zones, northern territories, Arctic waterways, maritime areas of strategic interest, and defence interests around the world. This is critical, given the challenges posed by Canada's geographical size and its more than 240,000 kilometres of coastline.

Unlike RADARSAT-1 and RADARSAT-2, which are single satellites, RCM is a constellation of three satellites. This allows for more regular monitoring of the Canadian coast, thus enhancing security. While the initial mission includes three satellites, the Constellation is designed so that it can grow to include up to six satellites.

Daniel Friedmann, MDA's president and CEO, said 'With RCM, MDA will be providing Canada with a powerful information solution to meet priorities in sovereignty, security, the Canadian North and resource management across the country. As well, this program will continue MDA's world leadership in the radar surveillance area'.

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 3,300 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

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.