The Central Industrial Security Force or CISF is a central armed police force under the Ministry of Home Affairs. It was initially established under the Central Industrial Security Force Act, 1968 to protect major PSUs. However, it was converted to an armed force with a larger ambit under an amendment to the Act in 1983. Now, CISF provides security to industrial ventures and establishments, VIPs and engages in disaster management amongst others. It also has a Fire Wing to response to fire emergencies/accidents. With a force larger than 1,65,000 it is the largest security force in the world.