"I doubt we'll end up cannibalising one another," Helen said, scoffing at that. "We live with Mark Watney, after all, and if anyone could keep us alive through a blizzard it's him."

She had great faith in Mark's ability to keep them in a closed system for long enough until they could get back outside once again. If that faith was misguided, Helen didn't want to know about it.

"Besides, I've been stranded in the Himalayas before. I think I'm prepared for this."