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Exhibit 12.1

Alliant Techsystems Inc.
Computation of Ratio of Earnings to Fixed Charges
(dollars in thousands)

		2001			2002			2003			2004			2005			1Q FY06
Earnings:
Income from operations before taxes		$	103,394		$	121,334		$	197,477		$	217,796		$	220,540		$	52,838
Plus fixed charges			35,071			105,608			81,968			63,376			68,840			18,553
	Earnings	$	138,465		$	226,942		$	279,445		$	281,172		$	289,380		$	71,391
Fixed Charges:
Interest expense, including amortization of debt issue costs		$	33,738		$	103,547		$	79,495		$	60,327		$	65,382		$	17,470
Estimated interest factor of rental expense			1,333			2,061			2,473			3,049			3,458			1,083
	Fixed Charges	$	35,071		$	105,608		$	81,968		$	63,376		$	68,840		$	18,553
Ratio of Earnings to Fixed Charges(1)			3.95	x		2.15	x		3.41	x		4.44	x		4.20	x		3.85	x
Rent expense			16,658			29,437			35,326			43,563			49,396			15,470
Implied interest rate on rent			8.0	%		7.0	%		7.0	%		7.0	%		7.0	%		7.0	%

(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.

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Alliant Techsystems Inc. Computation of Ratio of Earnings to Fixed Charges (dollars in thousands)