Eighty-seven percent of frequent flyers think that the Transportation Security Administration is doing either a poor or fair job in performing security screenings at the nation's airports.

Having served in the public sector for 30 years, John Pistole is stepping down from his position as director of the Transportation Security Administration in favor of a job in academia.

The barcode on expedited screening system PreCheck's boarding passes is unencrypted, allowing tech-savvy travelers to decode which security screening they are subject to.