Exhibit 12.1

DRS Technologies, Inc.  Computation of Ratio of Earnings to Fixed Charges

|                                                       |                                                                           | Quarter Ended
December 31, |        | Nine Months Ended
December 31, |  
|------------------------------------------------------ | ------------------------------------------------------------------------- | -------------------------- | ------ | ------------------------------ | -
|
|
|Earnings before minority interests and income taxes    |                                                                           | $                          | 20,946 |                                | $
|Add:                                                   |                                                                           |                            |        |                                |  
|                                                       | Fixed charges                                                             |                            |        | 9,088                          |  
|                                                       |                                                                           |                            |        |                                |  
|Earnings as adjusted                                   |                                                                           | $                          | 30,034 |                                | $
|                                                       |                                                                           |                            |        |                                |  
|Fixed charges:                                         |                                                                           |                            |        |                                |  
|                                                       | Interest on indebtness including amortization of deferred financing costs |                            | $      | 7,513                          |  
|Portion of rents representative of the interest factor |                                                                           |                            | 1,575  |                                |  
|                                                       |                                                                           |                            |        |                                |  
|Fixed charges                                          |                                                                           | $                          | 9,088  |                                | $
|                                                       |                                                                           |                            |        |                                |  
|Ratio of earnings to fixed charges                     |                                                                           |                            | 3.3    | x                              |  
|                                                       |                                                                           |                            |        |                                |  

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