Watch lists grow; more screening on flights to US

Watch lists grow more s

The names of dozens more people have been added to the US government's terrorist watch list and no-fly list after a failed terrorist attack on Christmas prompted officials to closely scrutinize a large database of suspected terrorists, an intelligence official said Monday. People on the watch list get additional checking before they are allowed to enter the United States; those on the no-fly list are barred from boarding aircraft in or headed for the United States.