EX-12.1 6 a2138450zex-12_1.htm EXHIBIT 12.1
QuickLinks -- Click here to rapidly navigate through this document

EXHIBIT 12.1


Alliant Techsystems Inc.
Statement Re: Computation of Ratios
(dollars in thousands)

 
   2000
   2001
   2002
   2003
   2004
  
Earnings:                                
Income from operations before taxes   $ 87,230   $ 103,394   $ 121,334   $ 197,477   $ 217,796  
Plus fixed charges     35,210     35,071     105,608     81,968     63,376  
   
 
 
 
 
 
  Earnings   $ 122,440   $ 138,465   $ 226,942   $ 279,445   $ 281,172  
   
 
 
 
 
 
Fixed Charges:                                
Interest expense, including amortization of debt issue costs   $ 33,999   $ 33,738   $ 103,547   $ 79,495   $ 60,327  
Estimated interest factor of rental expense     1,211     1,333     2,061     2,473     3,049  
   
 
 
 
 
 
 
Fixed Charges
 
$
35,210
 
$
35,071
 
$
105,608
 
$
81,968
 
$
63,376
 
   
 
 
 
 
 

Ratio of Earnings to Fixed Charges(1)
 
 
3.48
x
 
3.95
x
 
2.15
x
 
3.41
x
 
4.44
x

Implied interest rate on rent
 
 
8.0
%
 
8.0
%
 
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.



QuickLinks

Alliant Techsystems Inc. Statement Re: Computation of Ratios (dollars in thousands)