CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 27, 2015	Dec. 28, 2014
Current assets:
Cash and cash equivalents	$ 35.8	$ 33.5
Restricted cash	0.7	5.4
Accounts receivable, net	194.7	217.5
Inventoried costs	54.6	47.4
Prepaid expenses	9.6	7.1
Other current assets	15.0	10.2
Current assets of discontinued operations	0.0	53.8
Total current assets	310.4	374.9
Property, plant and equipment, net	60.7	61.6
Goodwill	483.4	483.4
Intangible assets, net	39.4	49.5
Other assets	27.6	32.4
Non-current assets of discontinued operations	0.0	137.0
Total assets	921.5	1,138.8
Current liabilities:
Accounts payable	28.1	44.6
Accrued expenses	26.6	32.4
Accrued compensation	30.0	41.1
Accrued interest	11.8	5.6
Billings in excess of costs and earnings on uncompleted contracts	49.2	49.6
Deferred income tax liability	30.2	30.3
Other current liabilities	9.9	7.9
Current liabilities of discontinued operations	1.5	14.6
Total current liabilities	187.3	226.1
Long-term debt principal, net of current portion	448.5	622.0
Line of credit	0.0	41.0
Other long-term liabilities	23.9	24.9
Non-current liabilities of discontinued operations	4.2	0.5
Total liabilities	$ 663.9	$ 914.5
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at December 28, 2014 and September 27, 2015	$ 0.0	$ 0.0
Common stock, $0.001 par value, 195,000,000 shares authorized; 57,801,978 and 59,085,117 shares issued and outstanding at December 28, 2014 and September 27, 2015, respectively	0.0	0.0
Additional paid-in capital	872.7	863.4
Accumulated other comprehensive loss	(1.5)	(1.7)
Accumulated deficit	(613.6)	(637.4)
Total stockholders' equity	257.6	224.3
Total liabilities and stockholders’ equity	$ 921.5	$ 1,138.8