i want to bring in the former police commissioner of new york city bernie kerik. what happens? >> you'll have the federal people in the first responders, the fire department the police department state police. first and foremost it's a rescue mission. get the survivors out and then you know evacuate the scene and, you know, work on the investigation afterwards. what happened? ironically i'm on this train at least once every two weeks or so. so when you watch this footage, you have to think that there are some serious injuries here. >> yeah yes. and just last week as we were traveling to baltimore, back and forth, and then before that to washington, d.c. for the white house correspondences' dinner this is how everyone really gets around. you can fly, but it's much more convenient because when you take these trains you can roll right into the middle of the city and don't really feed toneed to in a bigger city worry about car service, you can take a taxi subway train, and don't have to worry about traveling from the outskirts, from an airport. again, these are pictures now from in