>> less than 48 hours after the storm struck, new york city's chief infrastructure officer, frank jeskyok us down into the subway system. >> we'll take a quick look over there. >> to what looked like a scene from a science fiction movie, something beyond imagination. >> believe it or not, these timbers washed in from the ocean or the bay. >> this did right here? >> absolutely. >> so this washed in -- >> all this debris that you see washed in from the tidal surge. >> this station, the end of the line for the city's number one subway train, is called south ferry. three years ago, it was brand new, built at a cost of more than half a billion dollars. now it's in ruins. >> sandy broke records for the biggest waves in new york harbor, for the biggest surge in new york city, and for the lowest pressure ever north of north carolina. what was the impactful part of sandy was the surge at 12, 15 feet. that surge had never been seen in new york city before. >> when we were here, the water was just below this mezzanine level. >> nearly a month after our first interview -- >> you can see the rusts o