35. Joanne Maguire
EVP, Space Systems, Lockheed Martin (LMT)
2005 rank: New
The highest-ranking woman at the world's largest defense company has aerospace in her blood: Her father also worked in the industry. Maguire, who joined Lockheed Martin in 2003, runs the $6.8 billion division that supplies equipment and services for space launches, satellites, and missile systems. In August, NASA awarded her team a $4 billion contract to build the Orion spacecraft, which will eventually replace the Space Shuttle fleet. Maguire was named to Lockheed's board of directors in 2004.
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