ATK Awarded Production Contract for AAR-47 Missile Warning Systems for U.S. and Allied Military Aircraft

 ATK Awarded Production Contract for AAR-47 Missile Warning Systems for U.S.
                         and Allied Military Aircraft

ATK's Combat-proven AAR-47 System Credited with Saving Numerous Military
Aircrew and Aircraft from Missile Attacks

PR Newswire

ARLINGTON, Va., Dec. 11, 2012

ARLINGTON, Va., Dec. 11, 2012 /PRNewswire/-- ATK (NYSE: ATK) has received a
$48-million production contract from the U.S. Navy for the manufacturing of
the AAR-47 Missile Warning System. The award encompasses production of new
assemblies, including optical sensor converters and computer processors, as
well as options for retrofitting weapon replaceable assembly upgrades and
delivery of ATK's Countermeasures Signal Simulator (CSS) to test the systems

ATK's AAR-47 Missile Warning System is a combat-proven electronic warfare
system designed to protect helicopters and fixed-wing aircraft from
surface-to-air threats. The AAR-47 is the only system in use today that
integrates missile, laser and hostile fire threat warning into a single
system. With ATK's unique Hostile Fire Indication (HFI) capability added to
the AAR-47, military aircrews flying helicopters and fixed-wing aircraft can
detect a wider range of threats to their aircraft, including smaller-caliber
weapon fire and rocket propelled grenades.

"ATK's AAR-47 aircraft survivability system is installed on all U.S. Navy and
Marine Corps helicopters and transport aircraft operating in combat and
continues to save numerous aircrew lives and aircraft from attack," said Bill
Kasting, Vice President and General Manager of ATK Defense Electronic Systems.
"The addition of Hostile Fire Indication to the AAR-47 underscores our
commitment to deliver improved capabilities that protect U.S. and allied
military aircrews flying in harm's way."

"The AAR-47continues to provide the warfighter with a reliable, battle-proven,
low-cost, missile and laser warning capability," said Keith Taylor, Deputy
Program Manager for the PMA-272 Aircraft Survivability Equipment Branch at the
Naval Air Systems Command.

The AAR-47 missile warning system is installed on fixed and rotary-wing
aircraft flown by the U.S. and its allies in more than 16 countries. The
systems are installed on aircraft such as the A-10, C-5, C-17, C-130, MC-12W,
P-3, CH-53, CH-46, HH/SH-60, AH-1W/Z, UH-1N/Y, and MV-22.

ATK Defense Group is an industry leader in providing innovative and affordable
products across ammunition, precision and strike weapons, electronic warfare
systems, and missile components for air, sea, and land-based systems. ATK is
an aerospace, defense, and commercial products company with operations in 21
states, Puerto Rico, and internationally. 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: 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.

Approved for public release SPR-2012-1244

Media Contact:                Investor Contact:
Linda Burcham                 Steve Wold
Phone: 540-831-4748           Phone: 952-351-3056
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