bombers attacked two metro stations and most recently here in 2012, an attack on five policemen in dagestan carried out by a black widow. the concern is that these black widows are ready to strike key olympic sites. this is the greater sochi area. you hear us talk about security in the so-called ripping of steel. the intensely monitored perimeter. this is sochi. this is the olympic village along the coast. as we move north, this is where the athletes will be living, eating, breathing most of the time. northward you have the mountains with a lot of skiing evens that are held in the mountains. all of these sites, these are all soft targets russian authorities believe the black widows may have breached this perimeter. this so-called ring of steel that will is embedded inside. back to the breaking news story.