Mantech International (MANT) 10-Q 2010 Q3 Quarterly report

EXHIBIT 12.1

Ratio of Earnings to Fixed Charges

The following table provides our consolidated ratios of earnings to fixed charges (in thousands except ratios):

	Nine Months Ended September 30,		Year Ended December 31,
	2010		2009		2008		2007		2006		2005
Fixed Charges:
Interest expense (1)		8,353		1,141		3,978		5,103		2,375		3,165
Amortized premiums, discounts and capitalized expenses related to indebtedness (2)		664		300		280		393		83		83
Estimate of the interest within rental expense (3)		11,280		17,128		17,791		10,921		9,199		7,998
Total Fixed Charges		20,297		18,569		22,049		16,417		11,657		11,246
Earnings:
Pre-tax income from continuing operations before income or loss from equity investees (4)		147,679		178,508		149,959		110,125		90,421		85,279
Fixed charges		20,297		18,569		22,049		16,417		11,657		11,246
Distributed income of equity investees (4)		—		—		—		—		—		2,962
Total Earnings		167,976		197,077		172,008		126,542		102,078		99,487
Ratio of Earnings to Fixed Charges		8.3		10.6		7.8		7.7		8.8		8.8

(1) Interest expense consists of interest on indebtedness.

(2) Represents the amortization of financing costs incurred in connection with the Company’s credit agreements.

(3) The proportion of rental expense deemed to be representative of the interest factor is one third.

(4) Equity Investees are investments accounted for using the equity method of accounting.