WASHINGTON, Sept. 19 — JetBlue Airways acknowledged publicly today that it had provided a Pentagon contractor with information on more than one million of its passengers as part of a program to track down terrorists and other "high risk" passengers. That data, which was turned over in violation of the airline's own privacy policies, was then used to identify the passengers' Social Security numbers, financial histories and occupations. JetBlue, a three-year-old discount airline, sent an e-mail message to passengers this week, conceding that it had made a mistake in providing the records last year to Torch Concepts, an Army...