Alion - IPS S-4 Registration of securities issued in business combination transactions

EXHIBIT 12.1

Alion Science and Technology
Computation of Ratio of Earnings to Fixed Charges

																Six Months Ended
	Years Ended September 30,															March 31,
Actual Data	2005			2006			2007			2008			2009			2010
	(Amounts in thousands)
Fixed Charges
Cash interest expense	$	9,328		$	19,349		$	33,609		$	49,909		$	52,022		$	28,666
Amortization of capitalized expenses related to indebtedness		3,897			2,591			3,182			2,912			5,067			2,378
Total fixed charges	$	13,225		$	21,940		$	36,791		$	52,821		$	57,089		$	31,044
Earnings
Pre-tax earnings (loss)	$	(40,172	)	$	(31,089	)	$	(42,780	)	$	(25,334	)	$	(17,041	)	$	35,000
Fixed charges		13,225			21,940			36,791			52,821			57,089			31,044
Earnings before fixed charges	$	(26,947	)	$	(9,149	)	$	(5,989	)	$	27,487		$	40,048		$	66,043
Ratio of earnings to fixed charges		N/A (a	)		N/A (a	)		N/A (a	)		0.52 (b	)		0.70 (b	)		2.13

(a)	Earnings for fiscal 2005, 2006 and 2007 were inadequate to cover fixed charges in those years by $26.9 million, $9.1 million, $6.0 million.
(b)	Although the fixed charge coverage ratios for fiscal years 2008 and 2009 were positive, earnings were inadequate to cover fixed charges by $25.3 million in 2008 and by $17.0 million in 2009.