- Security cover categories in India are generally graded as SPG, Z+, Z, Y, and X, based on the threat perception to the individual. - The SPG is a specialized force solely dedicated to providing security to the Prime Minister of India and their immediate family, and sometimes to former Prime Ministers and their families for a specified period. This is considered the most elite and highest tier of protection. - Z+ category is the highest level of security provided by other central armed police forces like NSG, CRPF, ITBP, or state police, covering a larger number of high-risk individuals.