we all know it is much more than that. along with a new transportation hub and two enormous skyscrapers going up behind me there s also a memorial to the 2,206 people killed here almost ten years ago. ten years later all over manhattan, washington, d.c., there are echoes of that terrible day. police and troops with assault riefls in the train stations, same as it was. checkpoints and road blocks pulling over trucks and vans looking for explosives and other dangerous material. same as it was. people on edge, same as it was. and not just because of the anniversary. the breaking news tonight, new developments in the potential plot targeting new york and washington. two of the three people thought to be connected to it are american citizens. susan candiotti has been working her sources. she joins us now so does fran townsend former homeland security advisor for george w. bush. on the phone, analyst peter berg again. last night we thought at least one person was a u.s. citizen of