CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 25, 2016	Dec. 27, 2015
Current assets:
Cash and cash equivalents	$ 20.5	$ 28.5
Restricted cash	0.7	0.7
Accounts receivable, net	208.0	206.8
Inventoried costs	58.5	55.6
Prepaid expenses	11.1	10.6
Other current assets	9.7	18.2
Assets held for sale	1.9	0.0
Total current assets	310.4	320.4
Property, plant and equipment, net	47.3	56.2
Goodwill	483.4	483.4
Intangible assets, net	26.9	36.5
Other assets	7.9	6.8
Total assets	875.9	903.3
Current liabilities:
Accounts payable	47.2	48.3
Accrued expenses	45.1	33.1
Accrued compensation	32.9	36.8
Accrued interest	11.7	3.9
Billings in excess of costs and earnings on uncompleted contracts	42.5	42.3
Other current liabilities	6.2	6.1
Current liabilities of discontinued operations	1.8	1.9
Total current liabilities	187.4	172.4
Long-term debt, net of current portion	445.0	444.1
Other long-term liabilities	35.7	28.5
Non-current liabilities of discontinued operations	3.7	4.1
Total liabilities	671.8	649.1
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at September 25, 2016 and December 27, 2015	0.0	0.0
Common stock, $0.001 par value, 195,000,000 shares authorized; 60,516,717 and 59,139,651 shares issued and outstanding at September 25, 2016 and December 27, 2015, respectively	0.0	0.0
Additional paid-in capital	879.5	873.2
Accumulated other comprehensive loss	(1.6)	(1.4)
Accumulated deficit	(673.8)	(617.6)
Total stockholders’ equity	204.1	254.2
Total liabilities and stockholders’ equity	$ 875.9	$ 903.3