Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Alliant Techsystems Inc.:
We hereby consent to the incorporation by reference in Registration Statement No. 333-82192 of Alliant Techsystems Inc. on Form S-8 of our report dated June 23, 2006, appearing in this Annual Report on Form 11-K of the Alliant Techsystems Inc. 401(k) Plan for the year ended December 31, 2005.
/s/ DELOITTE & TOUCHE LLP
Minneapolis, Minnesota
June 23, 2006