Tens of thousands of New Yorkers, tourists and celebrities are expected to pack into Times Square on Sunday for the annual New Year's Eve bash. In recent days, organizers have readied heaps of confetti, the giant 2024 sign and the glittering ball that will descend from its pole as the clock strikes midnight. City officials said there were no known security threats to the event. But they said they were taking precautions, expanding the security perimeter to prevent disruptions amid near daily protests in New York against Israel's war in Gaza.