Math building. >> larry: how do you protect yourself from them? >> you can't. you can't. >> larry: somebody is going to set up a car bomb tomorrow, set it off. >> place like new york city what do you do inspect every car? it is absolutely impossible. there are sniffers wire, look for nitrates, you can profile car bombers but ultimately, you cannot stop them. >> larry: what did this guy do, harry? left a bomb and just ran from the car? in the middle of traffic? what did he do? >> it is a mystery. you have a car that wasn't even parked, simply vacated in the middle of broadway and -- >> larry: r...