DELAWARE		95-2777268
(State or other jurisdiction of incorporation or organization)		(IRS Employer Identification No.)
3300 North Sam Houston Parkway East Houston, Texas		77032-3411
(Address of principal executive offices)		(Zip Code)

PART I—FINANCIAL INFORMATION
		Page
Item 1. Financial Statements
Consolidated Balance Sheets—September 30, 2002 (unaudited) and December 31, 2001		3
Unaudited Consolidated Statements of Operations—For the Three and Nine Months Ended September 30, 2002 and 2001		5
Unaudited Consolidated Statements of Cash Flows—For the Nine Months Ended September 30, 2002 and 2001		6
Notes to Unaudited Consolidated Financial Statements		7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		12
Item 3. Quantitative and Qualitative Disclosures About Market Risk		25
Item 4. Controls and Procedures		25
PART II—OTHER INFORMATION
Item 2. Changes in Securities and Use of Proceeds		25
Item 6. Exhibits and Reports on Form 8-K		26

		September 30, 2002				December 31, 2001
		(unaudited)
CURRENT ASSETS:
Cash and cash equivalents		$	65,685			$	89,346
Receivables:
Trade, less allowance for doubtful accounts: 2002, $1,199; 2001, $1,332			31,870				36,836
Contract costs and estimated earnings in excess of billings			7,418				—
Other			345				642
Total receivables			39,633				37,478
Inventories:
Finished goods			23,200				33,057
Work-in-process			13,972				9,525
Raw materials			5,735				6,295
Total inventories			42,907				48,877
Deferred tax asset			4,006				8,566
Other current assets			2,255				2,461
Total current assets			154,486				186,728
PROPERTY:
Land and improvements			19,144				18,344
Buildings and equipment			50,910				41,854
Machinery and equipment			151,731				138,064
Construction-in-progress			5,115				17,753
Total			226,900				216,015
Less accumulated depreciation and amortization			(119,702	)			(115,977	)
Property, net			107,198				100,038
OTHER LONG-TERM ASSETS:
Deferred tax asset			521				1,091
Other assets			5,292				4,314
TOTAL		$	267,497			$	292,171

		September 30, 2002			December, 31, 2001
		(unaudited)
CURRENT LIABILITIES:
Accounts payable		$	13,753		$	23,358
Billings in excess of contract costs and estimated earnings			7,448			12,641
Accrued liabilities			17,654			17,266
Current portion of long-term debt			30,000			234
Current portion of capital leases			—			52
Income taxes payable			1,398			2,449
Total current liabilities			70,253			56,000
LONG-TERM LIABILITIES:
Long-term debt, excluding current portion			—			60,000
Deferred tax liability			453			411
Other			15,170			15,575
Total long-term liabilities			15,623			75,986
CONTINGENCIES (Note 3)
STOCKHOLDERS’ EQUITY:
Capital stock:
Preferred stock-authorized, 10,000,000 shares of $1 par value; none issued or outstanding
Common stock-authorized 75,000,000 shares of $.50 par value; 15,273,339 and 14,359,596 shares issued and outstanding at September 30, 2002 and December 31, 2001, respectively			7,637			7,180
Class B common stock-authorized, 32,000,000 shares of $.50 par value; 7,182,427 and 7,966,404 shares issued and outstanding at September 30, 2002 and December 31, 2001, respectively			3,591			3,983
Additional paid in capital			42,521			41,033
Retained earnings			127,872			107,989
Total stockholders’ equity			181,621			160,185
TOTAL		$	267,497		$	292,171

		Three Months Ended September 30,								Nine Months Ended September 30,
		2002				2001				2002				2001
REVENUE		$	62,133			$	66,658			$	184,256			$	182,290
COST OF SALES			38,506				43,380				115,908				120,521
GROSS PROFIT			23,627				23,278				68,348				61,769
SELLING, GENERAL & ADMINISTRATION EXPENSES:
Engineering			3,265				2,569				9,306				7,450
Sales and marketing			4,158				3,818				12,484				11,290
General and administration			3,667				4,438				12,479				11,880
Total			11,090				10,825				34,269				30,620
OPERATING INCOME			12,537				12,453				34,079				31,149
INTEREST EXPENSE			(2,035	)			(1,082	)			(4,269	)			(3,348	)
INTEREST INCOME			328				617				1,158				2,380
OTHER INCOME (EXPENSE)			(71	)			(160	)			(141	)			(918	)
INCOME BEFORE INCOME TAXES			10,759				11,828				30,827				29,263
PROVISION FOR INCOME TAXES			3,820				4,259				10,944				10,535
NET INCOME		$	6,939			$	7,569			$	19,883			$	18,728
NET INCOME PER SHARE:
BASIC		$	0.31			$	0.34			$	0.89			$	0.84
DILUTED		$	0.30			$	0.33			$	0.87			$	0.83
WEIGHTED AVERAGE SHARES OUTSTANDING:
BASIC			22,423,891				22,264,296				22,381,720				22,179,021
DILUTED			22,910,796				22,596,177				22,834,778				22,584,980

		Nine Months Ended September 30,
		2002				2001
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income		$	19,883			$	18,728
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation