Click photo to advance to next picture

The first female Space Shuttle pilot, and first female Space Shuttle Commander, Eileen Collins (left), and Space Shuttle Discovery's final Commander, Steve Linsey (right) participate in the "Welcome Discovery Ceremony" at the Smithsonian Institutes Udvar-Hazy Air and Space Museum on April 19, 2012. © Mike Lynaugh

The first female Space Shuttle pilot, and first female Space Shuttle Commander, Eileen Collins (left), and Space Shuttle Discovery's final Commander, Steve Linsey (right) participate in the "Welcome Discovery Ceremony" at the Smithsonian Institutes Udvar-Hazy Air and Space Museum on April 19, 2012. 

© Mike Lynaugh