Alliant Techsystems (NYSE: ATK) received a contract modification from NASA valued at $812.5 million for the continued production and refurbishment of four-segment reusable solid rocket motors (RSRM) for the space shuttle program.

The modified contract covers the production and refurbishment of flight and ground-test RSRMs.

“ATK’s solid rocket motors prove their reliability and performance on each space shuttle mission,” said Ron Dittemore, president, ATK Launch Systems. “With this contract extension we will continue to support NASA and the space shuttle program through 2010 when it is scheduled to retire, and are looking forward to continuing our legacy with a five-segment booster for Ares I, NASA’s new crew launch vehicle.”

The contract is the seventh in a series of contracts awarded to ATK for the design, development, production and refurbishment of RSRMs for the space shuttle program.

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: changes in governmental spending, budgetary policies and product sourcing strategies; the company’s competitive environment; the terms and timing of awards and contracts; and economic conditions. 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.