New York City will deploy sand-filled trucks and thousands of police officers as part of a plan to protect revelers at this year’s New Year’s Eve celebrations in Times Square, mindful of two deadly truck attacks in Europe this year. As many as 2 million people are expected to gather on Saturday to welcome the new year, and authorities said on Thursday they were aware of no credible threat to the annual festivities at the famed Manhattan crossroads. Even so, officials have redoubled efforts to prevent attacks like those in Germany and France this year in which suspected Islamic militants...