MDA On One Of Two Finalist Teams In Joint Support Ship Procurement

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that the CANAMP industrial team, of which MDA is a member, is one of the two finalists selected to carry out a project definition phase for the Joint Support Ship (JSS) project for the Canadian Navy.

Each of the two finalist industrial teams were awarded identical 14-month, CAD $12.5 million contracts to prepare final proposals for the design, construction, and long-term in-service support of the JSS. The build contract for three ships and the 20-year in-service support contract are expected to be awarded to one of the two finalists in 2008, with the first ship scheduled for delivery in 2012.

As a member of the CANAMP Team, MDA will focus on the Command, Control, Communication, Computer, Intelligence and Surveillance (C4IS) System.

JSS vessels will play a key role supporting Canada's Naval and Joint Task Force missions around the world with the critical provision of fuel, supplies, equipment, and logistics coordination. CANAMP team leader ThyssenKrupp Marine Systems Canada Inc. is one of the world's premier builders of versatile merchant, auxiliary and naval vessels, on which the CANAMP team's JSS design is based.

David Hargreaves, general manager of MDA's System Solutions business said, "This award gives MDA a chance at participating in building a key information solution for one of the largest defence procurements in Canada."

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/admmat/dgmepm/pmojss/index_e.asp
www.thyssenkrupp.com
www.canamp.ca

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.