Paul chuckled, showing a lot of gum. "Not surprisingly, the powers that be are a little nervous about that and so word came down from on high that we ought to be preparing a backup plan, so we can go pull Ymir ’s fat from the fire if need be. Well. That couldn’t be better, from a Martian point of view! As you know, we have been planning this mission for years. After Zero, I kept it going as a side project all through the development of the MIV program, and we managed to grease it in as one of the use cases."