SAIC maintains its headquarters in San Diego, but its center of gravity is in Washington, D.C. With a workforce of 44,000, it is the size of a full-fledged government agency—in fact, it is larger than the departments of Labor, Energy, and Housing and Urban Development combined. Its anonymous glass-and-steel Washington office—a gleaming corporate box like any other—lies in northern Virginia, not far from the headquarters of the C.I.A., whose byways it knows quite well. (More than half of SAIC's employees have security clearances.) SAIC has been awarded more individual government contracts than any other private company in America. The contracts number not in the dozens or scores or hundreds but in the thousands: SAIC currently holds some 9,000 active federal contracts in all. More than a hundred of them are worth upwards of $10 million apiece. Two of them are worth more than $1 billion. The company's annual revenues, almost all of which come from the federal government, approached $8 billion in the 2006 fiscal year, and they are continuing to climb. SAIC's goal is to reach as much as $12 billion in revenues by 2008. As for the financial yardstick that really gets Wall Street's attention—profitability—SAIC beats the S&P 500 average. Last year ExxonMobil, the world's largest oil company, posted a return on revenue of 11 percent. For SAIC the figure was 11.9 percent. If "contract backlog" is any measure—that is, contracts negotiated and pending—the future seems assured. The backlog stands at $13.6 billion. That's one and a half times more than the backlog at KBR Inc., a subsidiary of the far better known government contractor once run by Vice President Dick Cheney, the Halliburton Company.