ATK Test Validates Pulse-capable Solid Divert and Attitude Control System Design

ATK Demonstrates High-pressure Multi-pulse Operation

May 17, 2004

Minneapolis, May 17, 2004 – ATK (NYSE: ATK) and Honeywell (NYSE: HON) have successfully completed a critical hot-fire test of an ATK solid Divert and Attitude Control System (DACS) employing a modified valve design. DACS technology is used to control the yaw, pitch, and roll of Missile Defense Agency anti-missile warheads.

The DACS performed a simulated mission that included multi-pulse operations designed to maintain the kill vehicle’s energy and lethality during in-flight maneuvers. All test objectives were met.

Bart Olson, president, ATK Elkton, said the solid DACS test confirms ATK’s leadership position in advanced missile defense technologies.

"ATK looks forward to the deployment of a robust anti-missile shield and is proud of its contribution to the nation’s missile defense programs," said Olson. "Solid DACS technology will help interceptor missiles achieve mission success."

"The valve design includes a special gas divert disk that increases the warhead’s energy for in-flight maneuvers on the flight intercept path," said Adriane Brown, Vice President & General Manager, Honeywell Engines, Systems and Accessories. "The robust design enables higher energy requirements for warhead operation and continues our long history of advanced technologies for space, missile, and marine valves."

Honeywell designed and fabricated the valves for ATK, the DACS integrator. Additional static tests will be conducted to validate the design for potential application in system flight tests early next year.

ATK is a $2.4 billion advanced weapon and space systems company employing 13,200 people in 21 states. News and information can be found on the Internet at 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 challenges inherent in the development of advanced missile defense technology, changes in governmental spending and budgetary policies, economic conditions, equity market returns, the company's competitive environment, the timing of awards and contracts, the outcome of contingencies, including litigation and environmental remediation, program performance, and sales projections. ATK undertakes no obligation to update any forward-looking statements. For further information on factors that could impact ATK, and statements contained herein, reference should be made to ATK’s filings with the Securities and Exchange Commission, including quarterly reports on Form 10-Q, current reports on Form 8-K and annual reports on Form 10-K.