The FBI is considering adding those who attacked the US Capitol last week to the federal no-fly list.<br />When a person checks in for a flight, his or her reservation information is checked against the TSA's Secure Flight database.<br />The procedure includes determining whether the traveler is on the no-fly list or selectee list.<br />On Tuesday, congressional leaders called to keep rioters off planes after they said they remained mostly in the dark from the agencies that oversee the list.<br />Much of how the lists work, including what qualifies a person for inclusion and how many people are listed, is classified as sensitive security information.<br />The no-fly list began in the wake of the 9/11 attacks when the FBI provided the FAA a list of 125 people who should not be allowed on planes.