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ATK Announces TacSat-3 Satellite Has Exceeded Planned Mission Life, Reaching Two Year Anniversary On-Orbit

Extended TacSat-3 Satellite Mission Continues to Support Warfighters in the Battlefield
Mission Confirms Robustness of ATK's Quick-to-Launch Spacecraft Bus and Components, Also Well-Suited for Commercial and International Missions

Jun 7, 2011

MINNEAPOLIS, June 7, 2011 /PRNewswire/ -- ATK (NYSE: ATK) joins the U.S. Air Force Space Command in observing the two year anniversary on-orbit for the Tactical Satellite-3 (TacSat-3). Originally designed for six months of operation with a one year goal, the spacecraft successfully transitioned from experimental to operational status last year, outliving its design life and surpassing original mission requirements.

Launched in May 2009, TacSat-3's mission is to demonstrate capability to conduct hyperspectral imaging that is responsive to the needs of U.S. warfighters. Since then, the spacecraft has delivered over 2,100 images and demonstrated the ability to transmit processed data to a ground station within ten minutes. The spacecraft is a pioneer of the emerging Operationally Responsive Space program, which was designed to meet the growing need of U.S. forces for flexible, affordable and responsive satellite systems.

ATK, as the spacecraft bus prime contractor, provided the complete bus system, which included the onboard command and data handling system, solar arrays, spacecraft bus primary structure, and interfaces to the launch vehicle and payload. Built and designed in just 15 months, ATK's spacecraft bus met the TacSat-3 program goals of being operationally responsive, low-cost and with expected performance. The spacecraft also featured first generation modular bus technology designed to provide flexibility for future small satellite missions.

"TacSat-3's longevity and robustness shows that our innovative bus technology was a key factor in the success of this mission," said Tom Wilson, vice president and general manager, Spacecraft Systems and Services, a division of ATK Aerospace Systems. "We are already applying and enhancing our flexible, modular bus platforms for future small satellite missions that include the ORS-1 spacecraft. This technology is also well-suited for commercial and international missions where affordability, high performance, and a short turnaround are necessary."

Like TacSat-3, the Operationally Responsive Space-1 (ORS-1) mission focuses on the quick deployment of small satellites with innovative sensor technologies to provide operationally responsive ISR support to commanders in the battlefield. ORS-1 is due to be launched later this year.

The TacSat-3 program is managed by the Air Force Space Command with collaboration from the Air Force Research Laboratory Space Vehicles Directorate and the Army Space and Missile Defense Command.

ATK is an aerospace, defense and commercial products company with operations in 23 states, Puerto Rico and internationally with revenues of approximately $4.8 billion. News and information can be found on the Internet at

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 and assumptions related to the development of next-generation aerospace vehicles; 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.

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