Metropolitan Transportation Authority employees and contractors in hard hats cheered as the first train rolled into the pristine new station at the southern tip of Manhattan. The station was just 3-years-old when Sandy struck in October 2012, destroying electrical and mechanical systems and with a mix of seawater, sewage and debris. MTA officials say measures to protect the station from future storms include retractable flood doors at the entrances and reinforcement of other entry points for water including vents, manholes, hatches and air ducts.