Exhibit 21

Subsidiaries of Alliant Techsystems Inc.

as of March 31, 2009

All subsidiaries listed below are 100% owned except where noted.

			State or Other Jurisdiction of
Subsidiaries			Incorporation or Organization
·	ATK Commercial Ammunition Holdings Company Inc.			Delaware
	·	ATK Commercial Ammunition Company Inc.		Delaware
		·    Federal Cartridge Company		Minnesota
		·    Ammunition Accessories Inc.		Delaware
·	ATK Launch Systems Inc.			Delaware
·	ATK Space Systems Inc.			Delaware
	·    Swales & Associates, Inc.			Delaware
	·    COI Ceramics, Inc. (59% ownership)			California
·	ATK Insurance Company			Vermont
·	Eagle Industries Unlimited, Inc.			Missouri
	·	Eagle Mayaguez, LLC		Missouri
		·    Front Line Defense International, Inc.		Puerto Rico
	·	Eagle New Bedford, Inc.		Missouri
	·	Eagle Industries del Caribe, Inc.		Puerto Rico
	·	Eagle Industries International, Inc.		Bahamas

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