Part of the reason for having the list is that we do not want people who may be a threat to aviation to know whether they are on the list or not so that we can keep them on their toes, as it were, with respect to whether they would use the aviation system or not.
If someone who is on the list attempts to board a flight and we make an emergency direction with respect to their boarding, they will be notified that an emergency direction has been made, notified that they are on the list, and given a summary of the reasons that they are on that particular list. Then they can apply to our office of reconsideration to get themselves taken off the list.