ATK Selects Carl A. Marchetto to Lead the Company's New Space Systems Group

MINNEAPOLIS, Jan. 8 /PRNewswire-FirstCall/ -- Alliant Techsystems (NYSE: ATK) announced today that Carl A. Marchetto has joined the company to lead the formation of ATK Space Systems, a fourth business group for the company which will be established on April 1, 2008. Mr. Marchetto will become President, ATK Space Systems once the group is established. Mr. Marchetto was most recently the Executive Vice President of Orbital Sciences Corporation's Space Systems Group. He previously held senior leadership positions at NASA's Jet Propulsion Laboratory, Lockheed Martin's Astro Space Division, as well as Eastman Kodak, where he led its Commercial and Government Systems group.

ATK Space Systems will include the existing space operations of ATK's Mission Systems group. This will be combined with the Information Systems and Geospatial businesses of MacDonald Dettwiler and Associates upon completion of the acquisition, which is expected to close early in the first quarter of the company's fiscal year 2009 (FY09). The new group will be a full-spectrum satellite and space systems business with FY09 revenues of approximately $900 million. The group will have operations in four Canadian provinces and numerous facilities across the United States.

"The strategic significance of acquiring MDA's Information Systems and Geospatial Information Services businesses calls for equally strategic leadership and vision. Carl possesses these critical talents and I am very pleased he has joined our company," said Dan Murphy, Chairman and CEO. "Carl brings decades of technical experience, a wealth of customer knowledge, and a focused, disciplined business approach. Through his leadership, we will capitalize on significant opportunities in international commercial and military space markets."

ATK is an advanced weapon and space systems company with annual revenues in excess of $4.1 billion that employs approximately 17,000 people in 21 states. News and information can be found on the Internet at http://www.atk.com.

Certain information discussed in this press release constitutes forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Although ATK believes that the expectations reflected in such forward-looking statements are based on reasonable assumptions, it can give no assurance that its expectations will be achieved. Forward-looking information is subject to certain risks, trends and uncertainties that could cause actual results to differ materially from those projected. Among those factors are: the risk that the transaction will be completed within the time frame described, or at all; difficulty or unanticipated circumstances with the formation of ATK Space Systems or the integration of the acquired businesses; and the risk that opportunities as a result of the acquisition will not be realized. ATK undertakes no obligation to update any forward-looking statements. For further information on factors that could impact ATK, and statements contained herein, please refer to ATK's most recent Annual Report on Form 10-K and any subsequent quarterly reports on Form 10-Q and current reports on Form 8-K filed with the U.S. Securities and Exchange Commission.

     Bryce Hallowell                              Steve Wold
     Phone:  952-351-3087                         Phone:  952-351-3056
     E-mail:  bryce.hallowell@atk.com             E-mail:  steve.wold@atk.com