Reliance Industries Chairman Mukesh Ambani is the latest entrant to the 'Z' category VIP security club after the Union Home Ministry approved an armed commando squad following a threat perception to the business tycoon. Mr Ambani will be provided security by personnel from the Central Reserve Police Force (CRPF), a first for any private individual. The CRPF, which is the country's lead anti-Naxal force, extends cover to politicians and senior government functionaries.