to expect a higher level of security. there are these heavily armed, highly trained counterterrorism units that are easily seen around the city, some of them i've already seen here in times square, and they have a relatively new tool in their tool belt called a vapor wake explosive detection dog. unlike the bomb-sniffing dogs that we have known in the past that can smell a bomb in a bag or something, these dogs can actually smell a bomb down the street. katie. >> down the street, stephanie, are officers already employing those in times square? what security changes have you seen there? >> yeah. these dogs are out, around the city, and they have been in other kind of high-profile events. you know, the difficulty thing, the difficulty is, that you've got soft targets everywhere you go. >> yeah. >> and times square is not as soft as some, you know that there's already high levels of security, it is logistically