More than 50 million people are at risk for rain and flash flooding as deadly storms batter the Northeast. The storms unleashed a nightmare chain reaction of airport backlogs at the peak of the summer travel season. Lilia Luciano reports and Rob Marciano has the forecast.

More than 50 million people are at risk for rain and flash flooding as deadly storms batter the Northeast. The storms unleashed a nightmare chain reaction of airport backlogs at the peak of the summer travel season. Lilia Luciano reports and Rob Marciano has the forecast.