AECOM National Security Programs S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 12.1

AECOM

COMPUTATION OF CONSOLIDATED RATIO OF EARNINGS TO FIXED CHARGES

(Unaudited)

	Year Ended															Nine Months Ended
	September			September			September			September			September
	30, 2014			30, 2013			30, 2012			30, 2011			30, 2010			June 30, 2015(1)			June 30, 2014
	(In millions, except for ratio)
Earnings:
Income from operations	$	257		$	312		$	(31	)	$	339		$	320		$	(270	)	$	171
Add:
Fixed charges	90			92			94			100			59			388			66
Amortization of capitalized interest	2			2			2			2			1			20			2
Distributed income of equity investees	24			31			26			37			8			108			18
Less:
Capitalized interest	7			2			—			7			6			86			3
Noncontrolling interest	(3		)	(4		)	(2		)	(8		)	(12		)	(58		)	(2		)
Total Earnings	$	369		$	439		$	93		$	479		$	394		$	218		$	256
Fixed charges:
Interest expense	41			$	45		$	47		$	42		$	11		240			31
Capitalized interest	7			2			—			7			6			86			3
Interest component of rent expense	42			45			47			51			42			62			32
Total fixed charges	$	90		$	92		$	94		$	100		$	59		$	388		$	66
Consolidated ratio of earnings to fixed charges	4.1			4.8			1.0			4.8			6.7			n/a			3.9

(1)Earnings for the nine months ended June 30, 2015 were inadequate to cover fixed charges primarily due to acquisition and integration expenses and the corresponding interest related to the acquisition of URS Corporation. The coverage deficiency was approximately $170 million.