There are no known survivors of the 255 people aboard American Airlines flight 587 that crashed into the Queens borough of New York City this morning. Six people on the ground are missing and 35 others were treated for minor injuries. Early investigations point to mechanical failure as the most likely cause of the crash. Northwest Airlines is back to its normal schedule, after canceling 15 to 20 flights bound for New York-area airports. Hotel and airline stocks fell across the board today and Northwest was no exception, its stock fell six percent. Northwest spokesperson Kathy Peach says it's too early to tell if today's crash will cause a rush of cancellations or a drop off in bookings: