CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 27, 2022	Dec. 26, 2021
Current assets:
Cash and cash equivalents	$ 254.4	$ 349.4
Accounts receivable, net	65.9	93.9
Unbilled receivables, net	214.8	190.8
Inventoried costs	107.1	91.7
Prepaid expenses	11.1	9.8
Other current assets	34.6	22.5
Total current assets	687.9	758.1
Property, plant and equipment, net	173.5	168.3
Operating lease right-of-use assets	39.6	38.5
Goodwill	522.9	493.9
Intangible assets, net	51.5	43.2
Other assets	90.1	87.5
Total assets	1,565.5	1,589.5
Current liabilities:
Accounts payable	51.7	50.4
Accrued expenses	34.2	27.2
Accrued compensation	56.7	47.3
Accrued interest	0.2	1.5
Billings in excess of costs and earnings on uncompleted contracts	49.7	58.1
Current portion of operating lease liabilities	10.5	10.1
Other current liabilities	9.2	25.7
Current liabilities of discontinued operations	1.1	0.8
Total current liabilities	213.3	221.1
Long-term debt, net of current portion	295.0	296.7
Operating lease liabilities, net of current portion	33.3	32.7
Other long-term liabilities	73.9	76.2
Long-term liabilities of discontinued operations	2.5	2.5
Total liabilities	618.0	629.2
Commitments and contingencies
Redeemable noncontrolling interest	15.2	15.2
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at March 27, 2022 and December 26, 2021	0.0	0.0
Common stock, $0.001 par value, 195,000,000 shares authorized; 124,825,355 and 123,987,424 shares issued and outstanding at March 27, 2022 and December 26, 2021, respectively	0.0	0.0
Additional paid-in capital	1,582.0	1,578.9
Accumulated other comprehensive income	0.6	0.6
Accumulated deficit	(650.3)	(634.4)
Total stockholders’ equity	932.3	945.1
Total liabilities and stockholders’ equity	$ 1,565.5	$ 1,589.5