a lot of analysis of previously acquired information. is there anything that the government picked up over the past few months, particularly since the bin laden raid that at the time didn't seem to be relevant and now in light of this new information might actually make sense, so it's cross-checking, double-checking, and really going back to make sure nothing -- no stone is left unturned, and identifying whether or not this report is true and if it is, whether or not these individuals are really in the united states. >> okay. roger we'll see you again. thanks so much. >> you bet, alex. an army of extra security can be seen all over new york city this weekend. let's go live once again to ground zero and nbc's peter alexander. peter, i know you probably have a lot of security checkpoints to get through yourself getting to work. >> we did, and, in fact, today even early morning hours we experienced that security. there were those checkpoints you said on the west side highway throughout the city. you're going to see that tomorrow arks coringed to the police commissioner ray kelly. there will be thousands of additional security officers here around ground zero, but he made it very clear that this is not the only potential target in