Its Impossible News Today

>> steve: with what happened last monday, backpack bombs, this is one of your biggest fears, isnt it? >> true. were concerned about that. this is something thats very, very difficult to stop. >> steve: every third person on the street has a backpack. >> it seems that way, right. its an issue, certainly at major events. certain events where its a limited space, you can check backpacks. on new years eve, we do that in a very controlled environment. but in a marathon, we have 26 miles. >> brian: it...