CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2023	Dec. 25, 2022
Current assets:
Cash and cash equivalents	$ 72.8	$ 81.3
Accounts receivable, net	128.8	105.7
Unbilled receivables, net	200.4	222.8
Inventoried costs	156.2	125.5
Prepaid expenses	16.0	11.9
Other current assets	20.0	35.4
Total current assets	594.2	582.6
Property, plant and equipment, net	243.6	213.1
Operating lease right-of-use assets	45.7	47.4
Goodwill	569.1	558.2
Intangible assets, net	62.4	55.2
Other assets	117.5	95.0
Total assets	1,632.5	1,551.5
Current liabilities:
Accounts payable	63.1	57.3
Accrued expenses	35.4	33.8
Accrued compensation	64.7	52.2
Accrued interest	1.7	1.5
Billings in excess of costs and earnings on uncompleted contracts	101.8	62.1
Current portion of operating lease liabilities	12.1	10.8
Other current liabilities	12.8	15.6
Current liabilities of discontinued operations	0.9	0.9
Total current liabilities	292.5	234.2
Long-term debt	219.3	250.2
Operating lease liabilities, net of current portion	37.8	40.8
Other long-term liabilities	83.3	77.4
Long-term liabilities of discontinued operations	1.1	1.4
Total liabilities	634.0	604.0
Commitments and contingencies
Redeemable noncontrolling interest	22.5	11.2
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 authorized, 0 shares outstanding at December 31, 2023 and December 25, 2022	0.0	0.0
Common stock, $0.001 par value, 195,000,000 shares authorized; 129,286,964 and 125,985,306 shares issued and outstanding at December 31, 2023 and December 25, 2022, respectively	0.0	0.0
Additional paid-in capital	1,654.5	1,608.4
Accumulated other comprehensive income (loss)	1.7	(0.8)
Accumulated deficit	(680.2)	(671.3)
Total stockholders’ equity	976.0	936.3
Total liabilities and stockholders’ equity	$ 1,632.5	$ 1,551.5