Exhibit 12

Alliant Techsystems Inc.

Statement Re: Computation of Ratio of Earnings to Fixed Charges

	Fiscal Year Ended March 31,
(Dollars in thousands)	2012			2011			2010			2009			2008
Earnings:
Income before income taxes and noncontrolling interest	$	406,966		$	438,674		$	435,417		$	298,049		$	328,055
Plus fixed charges	102,495			100,475			88,932			98,207			113,942
Earnings	$	509,461		$	539,149		$	524,349		$	396,256		$	441,997
Fixed Charges:
Interest expense, including amortization of debt issuance costs	$	89,296		$	87,612		$	77,494		$	87,313		$	103,904
Estimated interest factor of rental expense	13,199			12,863			11,438			10,894			10,038
Fixed Charges	$	102,495		$	100,475		$	88,932		$	98,207		$	113,942
Ratio of Earnings to Fixed Charges (1)	4.97			5.37			5.90			4.03			3.88
Rent expense	82,494			80,391			71,486			68,086			62,739
Percent of rent expense that represents interest	16		%	16		%	16		%	16		%	16		%

(1) For purposes of calculating the ratio of earnings to fixed charges, “earnings” represents income from continuing operations before income taxes, plus fixed charges. “Fixed charges” consist of interest expense, including amortization of debt issuance costs and that portion of rental expense considered to be a reasonable approximation of interest.