they've gone this far to really alert the public of potential toothpaste bombs? >> we heard the testimony yesterday of the national counterterrorism center. now we understand this had to have been one of them. we know that different al qaeda and extreme is groups have used liquid explosives. we know they share bomb making training and information across the extremeist spectrum. the worry there is a plastic explosive. >> so they're coordinated on their side. are we coordinated on our side? what's the latest understanding as to how russia and the u.s. are working together? >> just yesterday, they said they are sharing information. and it appears as though this