January 3, 2008

NASA awards MDA contract for on-going support of Robotics

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that it has received a contract worth $39.5 million (CAD), with options of a further $36.3 million (CAD) to provide continued support to NASA's Johnson Space Center for robotic elements.

The contract continues sustaining engineering services provided by MDA to support the Space Shuttle Canadarm and its inspection boom, as well as the Robotic Work Station on the ISS. This follow-on contract will continue that support through late 2010.

Renewal of the main robotic elements on the International Space Station are not included within this contract. Solutions developed by MDA have supported manned spaceflight for over 25 years and are transitioning to solutions for future exploration and servicing missions, as well as applications in hostile environments here on Earth.

The Canadian Commercial Corporation is acting as the contracting agency between MDA and NASA and has executed the contract.

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

Forward-Looking Statement
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.