attackers, maybe coming through dubai or europe to carry out an attack near the anniversary of 9/11. that has set off all these security measures. somebody in the intelligence community said. reason you heard about the threat is because it was linked to 9/11. we wanted to get information out there. we wanted america to be on alert and keep their eyes out for anything suspicious. that is the only reason that this became so public. but again the headline right now gregg, according to a senior u.s. official who is intelligence briefings today, this plot is looking less and less credible and looking more and more like a goose chase but still they are working this 24/7. >> gregg: thanks. >> heather: that would be good news. we are seen serious police activity at ground zero as new york city prepares to open the national september 11th memorial to the public.