Questions Linger over Men's Behavior on Domestic Flight The bizarre behavior of 14 Syrian men on Northwest flight 327 from Detroit to Los Angeles last month alarmed passengers, air marshals and the flight crew. Writer Annie Jacobsen, who was on board, believes they may have been on a "dry run," probing the limits of U.S. airline security. Federal officials deny that. But many questions remain. NPR's Mary Louise Kelly reports.