From Washington: Changes to air travel have occurred since a major terrorist attack. Security checks for passengers became more thorough after this event. A class system has developed for screening, with certain programs offering expedited service.

Passengers can no longer accompany traveling companions to the gate, a change from previous practices. This shift has resulted in a more complex experience for travelers, with multiple lines and segmentation based on payment. Further information is available from consumer advocacy groups, who have noted these changes and their impact on air travel.