 Well, first, Delta Airlines says it's taking about a $100 million hit this summer as Americans avoid Paris. Delta's the top airline from the U.S. to France. People don't want to be there during the Olympics if they're not going to the Olympics. And that may impact some airfares for the summer. But as the CEO tells CNBC, the low airfares domestically within the U.S. this summer are a result of too many airline seats.