these panicked parisians. has anyone been able to tell you exactly what they were running from? >> i'll tell you, we came here, we're in a building couple blocks away with about a hundred people on the top floor. there are girls crying here, people on their phones trying to figure out what happened. we're watching french television here which now shows people going back into the place de la republique. i've never seen a crowd move that size with such panic. really fleeing any direction they could. it gives you a measure of the level of concern in paris right now. i've talked to a lot of people here to say did you hear gunfire, no one can say that. it was enough for one person to be nervous to get the whole crowd moving. i'll tell you, i have never seen anything like it.