ATK Will Webcast Conference Call on Its Second Quarter Fiscal Year 2012 Financial Results13:00 EDT Monday, October 17, 2011 MINNEAPOLIS (Business Wire) -- ATK (Alliant Techsystems)(NYSE:ATK) will webcast its investor conference call on fiscal year 2012 second quarter financial results, which will be announced November 3, prior to the opening of the market. In addition to discussion of the quarterly results, the Company may discuss its outlook and financial guidance for future periods during the call. Conference call details are as follows: This call is being webcast by CCBN and can be accessed at ATK's web site at www.atk.com, Investor Relations; Investor Information; Webcasts. Information about downloading Windows Media Player software, which is required to access the webcast, will be available on the website. When:   10:00 a.m. Eastern Time, Thursday, November 3, 2011.   Who: Mark DeYoung, President and Chief Executive Officer Tom Sexton, Vice President and Interim Chief Financial Officer Steve Wold, Vice President and Treasurer Telephone recording: For those who cannot participate in the live webcast, a telephone recording of the conference call will be available. The telephone number is 719-457-0820, and the confirmation code is 5442458. The recording will be available for one month after the call. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com). ATK is an aerospace, defense, and commercial products company with operations in 22 states, Puerto Rico, and internationally, and revenues of approximately $4.8 billion. 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 these factors are: assumptions related to the profitability of current commercial aerospace structures programs; uncertainties related to the development of NASA's new Space Launch System; changes in governmental spending, budgetary policies and product sourcing strategies; the company's competitive environment; risks inherent in the development and manufacture of advanced technology; risks associated with the diversification into new markets; increases in commodity costs, energy prices, and production costs; the terms and timing of awards and contracts; program performance; program terminations; changes in cost estimates related to relocation of facilities; the outcome of contingencies, including litigation and environmental remediation; actual pension asset returns and assumptions regarding future returns, discount rates and service costs; capital market volatility and corresponding assumptions related to the company's shares outstanding; the availability of capital market financing; changes to accounting standards; changes in tax rules or pronouncements; economic conditions; and the company's capital deployment strategy, including debt repayment, dividend payments; share repurchases, pension funding, mergers and acquisitions and any integration thereof. 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. ATKBryce Hallowell, 952-351-3087 (Media)bryce.hallowell@atk.comorSteve Wold, 952-351-3056 (Investor Relations)steve.wold@atk.com