>> okay. so if you look behind me, one of the big things that they have been doing in recent years and what they're going to continue to do are these steel ballers. they can stop pretty much anything. solid steel, dug into the crowned. that is what stops a vehicle from plowing through here and all the people that you see in times square every day this is such a target especially during the daytime hours tourists walking around. the nypd investigating even more of these steel ballers is what they are called. also concrete barriers. steel ballers that stopped them attack. not a terrorist attack but crazy guy driving up through times square. number of people injured killed one woman. that's how they are trying to keep this area safe. as we are seeing now, we are moving to a point where there is no longer weapons. there are not many ways that you can secure a crazy person with a car. people can get their cars on. this is how they will keep people safe in areas that are as busy as manhattan.