AECOM Special Missions Services S-4 Registration of securities issued in business combination transactions

Exhibit 12.1

AECOM

COMPUTATION OF CONSOLIDATED RATIO OF EARNINGS TO FIXED CHARGES

(Unaudited)

	Year Ended															Six Months Ended
	September			September			September			September			September
	30, 2014			30, 2013			30, 2012			30, 2011			30, 2010			March 31, 2015(1)			March 31, 2014
	(In millions, except for ratio)
Earnings:
Income from operations	$	257		$	312		$	(31	)	$	339		$	320		$	(234	)	$	94
Add:
Fixed charges	90			92			94			100			59			305			45
Amortization of capitalized interest	2			2			2			2			1			16			1
Distributed income of equity investees	24			31			26			37			8			73			15
Less:
Capitalized interest	7			2			—			7			6			85			3
Noncontrolling interest	(3		)	(4		)	(2		)	(8		)	(12		)	(41		)	(2		)
Total Earnings	$	369		$	439		$	93		$	479		$	394		$	116		$	154
Fixed charges:
Interest expense	41			$	45		$	47		$	42		$	11		179			21
Capitalized interest	7			2			—			7			6			85			3
Interest component of rent expense	42			45			47			51			42			41			21
Total fixed charges	$	90		$	92		$	94		$	100		$	59		$	305		$	45
Consolidated ratio of earnings to fixed charges	4.1			4.8			1.0			4.8			6.7			n/a			3.4

(1)Earnings for the six months ended March 31, 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 $189 million.