on the new theft that s been leveled against the united states. as the clock runs down to the anniversary on sunday, police, national guard, bomb-sniffing dogs are all out in force in new york and washington, d.c. intelligence officials are pouring over the names on flights from abroad. and abc news has learned new details on this threat. abc s brian ross has been talking to intelligence officials all day and he is standing at one of the many police checkpoints all over this city tonight. brian? reporter: gooooevening, diane. abc news has learned new details of the source of this troubling information. my colleague martha raddatz reports, the source, overseas, is well-known and trusted by u.s. officials but that in this case, his information about the vehicle bomb plot may be, at best, second-hand. even so, officials say at this point, they have though choice but to act as if the threat is real and that the clock is ticking. it was only 48 hours ago, on wednesday in pakista
love and life. our persons of the week. good evening to you. we are a nation coming together tonight to remember 9/11, ten years ago, and to stand sentry on the new theft that s been leveled against the united states. as the clock runs down to the anniversary on sunday, police, national guard, bomb-sniffing dogs are all out in force in new york and washington, d.c. intelligence officials are pouring over the names on flights from abroad. and abc news has learned new details on this threat. abc s brian ross has been talking to intelligence officials all day and he is standing at one of the many police checkpoints all over this city tonight. brian? reporter: gooooevening, diane. abc news has learned new details of the source of this troubling information. my colleague martha raddatz reports, the source, overseas, is well-known and trusted by u.s. officials but that in this case, his information about the vehicle bomb plot may be, at best, second-hand. even so, officials s