From the Women's International Air & Space Musuem newsletter:
NASA astronaut Pam Melroy has retired from NASA effective August 7th.
She has joined Lockheed Martin.
Melroy last flew as commander of STS-120 in 2007 when there were two women commanders in space simultaneously---Melroy and Peggy Whitson on the space station. She also flew as pilot of STS-112 in 2002 and STS-92 in 2000. Melroy, a retired Air Force Colonel, was the second woman commander of the Space Shuttle after Eileen Collins.