A 450-camera surveillance grid, upgraded anti-drone systems, and more than 3,000 security personnel are keeping a 24x7 vigil over Red Fort on Friday, a day before hundreds of VIPs, including President Droupadi Murmu, Prime Minister Narendra Modi and foreign dignitaries, reach the historic site for the 80th Independence Day celebrations.

A 450-camera surveillance grid, upgraded anti-drone systems, and more than 3,000 security personnel are keeping a 24x7 vigil over Red Fort on Friday, a day before hundreds of VIPs, including President Droupadi Murmu, Prime Minister Narendra Modi and foreign dignitaries, reach the historic site for the 80th Independence Day celebrations.