One thing to say about doing maintenance in space - it is difficult because the parts and pieces float away. You end up using a lot of tape and Velcro to make sure things stay put.

We certainly would not be here, living and working on the International Space Station without the commitment and dedication of all the folks who worked the Mercury, Gemini, and Apollo Programs as well as the Russian Space Program.

When any part of the Station is moved from its designated location to do a repair, we really risk losing things.

Sunita Williams Quotes