Previous rank: New
Age: 57
As head of the largest IT provider to the U.S. government, she produced $12 billion in revenue in 2009, almost 27% of the company's total, but her unit's profits were down. In a realignment two of her businesses went to Hewson.
NEXT: Gail Boudreaux
Last updated September 30 2010: 2:47 PM ET