The first two missions have some test objectives, some new capabilities that we're going to try to develop on orbit to possibly be used on later flights.

This is a group with a public agenda of hate and violence toward other people. I don't think they're in anyway in consonance with Loyola's beliefs or, quite honestly, individuals or groups of good faith anywhere.

He's working a lot harder than I am. I tell these people that we really appreciate what they're doing for us.

I personally believe this Agency has always been very dedicated and has always worked as hard as it possibly can to do things as safely and as effectively as possible.

I'll be helping them getting suited up, getting them in the airlock, getting the airlock prepared, and getting them out the hatch, and then talking them through these three spacewalks.

The ISS crew is going to help us during our EVAs and help us during some of our robotics operations. These guys will be on orbit already.

After we get back on the ground, somebody will ultimately decide if this system works well enough to do a repair on the underside of the vehicle.

After the loss of Columbia a couple of years ago, I think we were reminded of the risk. All of us, though, have always known that the Space Shuttle is a very risky vehicle, much more risky than even flying airplanes in combat.

It's important to bring things back from the Space Station because, unlike somebody living at the house where the garbage truck comes by twice a week, they don't have that in space.

There's been a lot of discussion about NASA culture and changing that. I think our culture has always been one of trying to do a very difficult job and do it well.