It's 7 a.m. at the Kimball's Washington, D.C., home. Peter and Leslie Kimball are running up and down the stairs, changing diapers and trying to feed their kids breakfast.
They're packing for a work conference in Orlando, Fla., but they've also planned a surprise for their daughter Lane's birthday: a visit to Disney World.
This summer, more than 200 million people are expected to fly out of U.S. airports. The Kimballs are one of many families flying with their kids.