MacDonald, Dettwiler and Associates Ltd. (“MDA” or the “Company”) (TSX: MDA), a global communications and information company, announced today that the NASA’s Johnson Space Center has exercised a one year option extending its support of the Robotic Work Station on the International Space Station.

This is the first of two options outlined in the original contract that was announced in January 2013. The option is valued at CA$3.5 million and runs through September 2014.

The Robotic Work Station is the control station used to operate Canadarm2 and plays an essential role in the capture and berthing of re-supply vehicles visiting the space station.

About MDA

MDA is a global communications and information company providing operational solutions to commercial and government organizations worldwide.

MDA’s business is focused on markets and customers with strong repeat business potential. In addition, the Company conducts a significant amount of advanced technology development.

MDA’s well-established global customer base is served by more than 4,500 employees operating from 11 offices located in the United States, Canada, and internationally.

The Company’s common shares trade under the symbol TSX:MDA.