 ABC News, I'm Daria Alding. Ready, set, go. It could be a record-breaking July 4th travel weekend with more than 30 million people passing through the nation's airports and another 60 million on the roads. We're expecting record travel again this weekend. Today, about 2.8 million passengers. Busiest day likely to be Sunday at about 3 million. And as you know, we broke a record, 2.99 million the Sunday before last. So it's been busy since really Mother's Day.