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ATK Completes Software TIM for Liberty under NASA's Commercial Crew Program

June 28, 2012

ARLINGTON, Va., June 28, 2012 /PRNewswire/ -- ATK (NYSE: ATK) completed its
Liberty software technical interface meeting (TIM), which was held to support
further development of the Liberty space transportation system under the
company's Space Act Agreement (SAA) with NASA for the Commercial Crew
Development Program.

The software TIM was conducted to evaluate Liberty's software development plan
with the NASA Liberty team. The plan governs the software process used by
Liberty and its subcontractors throughout development, integration, test and

"Understanding how your system will work together throughout the mission is
critical in reducing risk and schedule delays," said Kent Rominger, ATK Vice
President and Program Manager for Liberty. "Holding this TIM provides us
valuable insight into expertise provided by the NASA team and ensures there are
no issues we are overlooking."

The development of software is critical for understanding the entire system to
support Liberty's test flights. Unmanned test flights are scheduled for 2014 and
2015, followed by the first crewed flights in 2015 with Liberty astronauts.

The TIM was held this month at Ball Aerospace & Technologies Corp.'s Boulder
campus and the Lockheed Martin Waterton facility near Denver. The team also
toured both facilities, including the integration and test laboratories where
Liberty's flight and ground software will be checked out prior to its test

Team members involved with Liberty's software development include ATK (first
stage and ground support equipment (GSE)), Lockheed Martin (spacecraft subsystem support, launch vehicle ascent control and spacecraft GSE), Ball Aerospace (Situation Awareness Fault Evaluation (SAFE) and Subsystems), Astrium (second stage) and L3 Communications Cincinnati Electronics (Integrated Avionics and Flight Safety Systems), and Teledyne Brown (cargo carrier).

The CCDev-2 Liberty unfunded SAA enables NASA and the Liberty team to share
technical information related to the Liberty Transportation System during the
preliminary design review phase of the program. ATK has completed four
milestones and held three TIMs, all on internal funding. The fifth and final
milestone under the agreement is schedule for July.

"This SAA with NASA's Commercial Crew Program has enabled us to further advance development as we receive valuable feedback from a team of experienced human
space flight experts," said Rominger. "As a result, we are able to offer a
complete commercial crew service, and provide safe, reliable, cost-effective
crew transportation to low Earth orbit."

ATK announced last month it had developed Liberty into a complete commercial
crew transportation system, including the Liberty composite spacecraft, abort
system, launch vehicle and ground and mission operations, all designed from
inception to meet NASA's human-rating requirements.

Additional subcontractors for Liberty include Safran/Snecma, Moog Inc.,
Honeywell, Astrotech Space Operations (ASTC), Aerojet, Reynolds, Smith and
Hills, Dynamic Concepts, Inc. and Hamilton Sundstrand. More information on the
Liberty system can be found at

ATK is an aerospace, defense, and commercial products company with operations in
22 states, Puerto Rico, and internationally. News and information can be found
on the Internet at

NASA CCP Media Contact: Candrea Thomas, 321-867-2468, Candrea.k.thomas@

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
in developing a new commercial launch vehicle; 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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