"The No Fly List, once distributed, clearly infringes upon a citizen's right to travel; and the Court cannot conclude based on the present record that there are no means less restrictive than an unqualified flight ban to adequately assure flight security, such as comprehensive preflight screening and searches. Second, the current record is inadequate to explain why judicial involvement before a person is placed on the No Fly List is either unnecessary or impractical, other than perhaps within the context of an emergency based on a specific, imminent threat that requires immediate action. Nor does the record conclusively establish that there cannot be any opportunity, either before or after an American citizen is placed on the No Fly List, to know of or challenge any of the information used to list him, even where such information could be summarized in a way that does not compromise sources or methods." [1]