L3 10-Q 2014 Q1 Quarterly report

Exhibit 12

L-3 Communications Holdings, Inc.

and L-3 Communications Corporation

Ratio of Earnings to Fixed Charges

	First Quarter Ended March 28, 2014
	($ in millions)
Earnings:
Income before income taxes	$	267
Net income attributable to noncontrolling interests		(2	)
Income before income taxes after noncontrolling interests	$	265
Add:
Interest expense		42
Amortization of debt expense		1
Interest component of rent expense		13
Earnings	$	321
Fixed charges:
Interest expense		42
Amortization of debt expense		1
Interest component of rent expense		13
Fixed charges	$	56
Ratio of earnings to fixed charges		5.7