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37. Linda Hudson
President and CEO
BAE Systems (BAESY)
2009 rank: 43
Age: 60

Since joining BAE almost four years ago the engineer's trajectory has led her straight to the top. In October 2009 she was named CEO, making her the first female to head a major U.S. defense company.

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Last updated September 30 2010: 2:47 PM ET
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