"I appreciate the fact that she is on the ground, safe and sound. And I don't think she knows just how worried some of us were," Mr Romney said, according to the LA Times. "When you have a fire in an aircraft, there's no place to go, exactly, there's no – and you can't find any oxygen from outside the aircraft to get in the aircraft, because the windows don't open. I don't know why they don't do that. It's a real problem. So it's very dangerous. And she was choking and rubbing her eyes. Fortunately, there was enough oxygen for the pilot and copilot to make a safe landing in Denver. But she's safe and sound."