there will be extra scrutiny on car rental and truck rental businesses an around the city in an effort to prevent someone renting a truck and launching a vehicular attack. and there will be vapor wake dogs to sniff out bombs. and we spoke to new year'see organizers and this is what they had to say. they're confident about it being safe. >> nypd has a thorough system. times square is one of the most safest places in the world. at every corner, there's a settle of barriers, checkpoints. you're not allowed to bring in bags. really thorough and really experienced with this kind of situation. >> those two terrorists that launched the two attacks the last two months in the city were isis sympathizers and isis released a video monday encouraging people to attack