This screen shot provided by FlightAware shows airline traffic at 10:20 a.m. EDT over the United States Friday, Sept. 26, 2014, after hundreds of flights were canceled at Chicago airports, at center, following a fire at a suburban Chicago air traffic control facility. The ground stop threatened to send delays and cancellations rippling throughout the nation's air travel network, as more than 500 flights had already been canceled in Chicago and more were expected. (AP Photo/Courtesy FlightAware)

This screen shot provided by FlightAware shows airline traffic at 10:20 a.m. EDT over the United States Friday, Sept. 26, 2014, after hundreds of flights …

Published on September 26, 2014
Beyonce and Jay Z kicked off the wildly successful "On the Run" tour this past June.

Beyonce and Jay Z kicked off the wildly successful "On the Run" tour this past June.

Published on September 26, 2014

Published on September 26, 2014
In This Aug. 29, 2014, photo Erin Nwachukwu right, goes over class schedules with her friends, Khalidah Ahmad, left, and Yosef Smith, center, during orientation day at Lindblom Math and Science Academy in Chicago. A new study has found that, while Americans are mistrustful of each other and institutions -- from government to corporations and the media -- young people are among the least likely age group to have confidence in those institutions, especially since the terror attacks of Sept. 11, 2001.

In This Aug. 29, 2014, photo Erin Nwachukwu right, goes over class schedules with her friends, Khalidah Ahmad, left, and Yosef Smith, center, during orientation …

Published on September 26, 2014
A sign and a pin are pictured on the back of a demonstrator during a protest against the shooting death of teenager Michael Brown, in Ferguson, Missouri, on August 13, 2014.

A sign and a pin are pictured on the back of a demonstrator during a protest against the shooting death of teenager Michael Brown, in …

Published on September 26, 2014