Fuel prices have plummeted this year, but airfares have remained high. The International Air Transport Association estimates that the world's airlines will rake in nearly $20 billion in profits this year. Brennan Linsley/AP hide caption

itoggle caption Brennan Linsley/AP

A couple walks on the beach in the resort area of Varadero, Cuba. Varadero is home to upscale hotels and resorts that cater to foreign tourists, but there aren't yet enough to handle a potential influx of Americans. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

The airline industry is predicting more people will take to the skies this Thanksgiving than in any year since the start of the recession. David Goldman/AP hide caption

itoggle caption David Goldman/AP

A water maintenance crew works on leaky infrastructure in Skokie, a Chicago suburb. The area loses almost 22 billion gallons of water a year because of ailing infrastructure. David Schaper /NPR hide caption

itoggle caption David Schaper /NPR

Federal Aviation Administration Administrator Michael Huerta answers questions Friday after touring the Chicago air traffic control center with Sen. Mark Kirk, R-Ill. (left), and city aviation Commissioner Rosemarie Andolino. Charles Rex Arbogast/AP hide caption

itoggle caption Charles Rex Arbogast/AP