one of the things that we know about bombers, part of their psychological profile is they like to inspire fear in people. and when there's a bomber, it's important for people to be calm, for people to be vigilant, for people to look for suspicious packages and rather than try to figure out if they are suspicious on their own to call a law enforcement agency. law enforcement would always rather have people ere on the side of caution in these situations. >> and one of these packages was sent -- it's now been several days since we learned about the ones sent to george soros. so they have had more time to look into that one. does that give a head start when it comes to other cases in your view? >> it will give them a measuring stick. they will be able to use what they know about the bomb at the residence to determine whether there was one bomb maker. that will be one of the first things that they will do.