First we have to get it into orbit, which is not an easy task.

It's going to be difficult to get it into orbit. Mars is hard, Mars can be unpredictable, but we've got a good team here.

(Hume) had opportunities to close out the first set. But he stayed on task. It's not always too easy to lose a first set like that.

Bringing a lake around once it's been impaired is not an easy task.

It's a little nerve-racking even though it's exciting.

This is a little bit nerve-wracking, although it's exciting.