Simply put: How the forces protect VIPs
Z, Z+ and SPG security, know about security categories in India and difference among them
Special Protection Group(SPG) - iPleaders
SPG vs Z+ security: What's the difference?
What is X, Y, Z, Z+ and SPG category security in India? - India Today
)
Centre grants 'Z' category VIP security cover to Adani Group Chairman Gautam Adani
Explained: What is SPG protection and who gets it?
Various Types of VIP Securities – Basic Gyaan
VIP securities in India - ijalr
Former PM's Security Status Downgraded