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20. SAIC
SAIC
Fortune 500 rank: 266

SAIC, which provides technology systems to the U.S. military and other government agencies, broke into the Top 20 on an 8.7% increase in profits to $452 million on sales of $10 billion.

Big defense budgets have helped drive profits for the company, which supplies the Pentagon with everything from advanced combat systems to port- and border-control technology.

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Last updated April 29 2009: 1:31 PM ET
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