MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that Dextre, the special purpose dexterous manipulator developed under contract from the Canadian Space Agency, has been delivered to NASA’s Kennedy Space Center in Florida, where it will undergo final preparations for delivery to, and installation on the International Space Station.

Dextre is a component of the Mobile Servicing System (MSS), Canada’s contribution to the International Space Station. Two other components of the MSS, which are already operational on the space station, are the Mobile Base and the Canadarm2.

Once installed as an extension of the Canadarm2, the highly dexterous dual-armed solution will be able to touch, sense, and respond much like a human, and is expected to be used for many of the servicing and assembly tasks currently performed by astronauts on space walks. Continued operations and maintenance support for the components that make up the MSS will remain essential to ensure optimal performance throughout its life on the International Space Station.

If you are interested in more information on Dextre, including pictures of its voyage and processing at Kennedy Space Center as well as information on Canada’s Mobile Servicing System, visit the MDA website at: http://mdacorporation.com/spacemissions

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

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.

For further information Wendy Keyzer, MDA External Relations, (604) 231-2743, wendy@mdacorporation.com