Mumbai police have deployed over 17,000 personnel, including officers and additional forces, for New Year's Eve celebrations to ensure law and order. Large gatherings are anticipated at popular city spots, hotels, and malls. Security measures include intensified patrolling, checkpoints (nakabandi), and deployment of specialized units like SRPF and BDDS. Police will take strict action against anti-social activities and urge citizens to celebrate peacefully and follow regulations, providing helpline numbers for assistance.