From SPG to armored cars, Know more about PM Modi's security - video Dailymotion
PM Modi's security upgraded: Mercedes-Maybach S650 included in his cavalcade - PGurus
Past and no prejudices: Security breaches of PMs
Security breach: Calls to review 'Blue Book' to deal with new threats - The Week
How does security personnel ensure PM Modi's security at the mega rallies? - Quora
Is Modi's security a mere SPG vs NSG debate for Congress, BJP? -Politics News , Firstpost
Modi enjoys twice the security cover of his predecessor
SPG takes stock of security measures at PM Narendra Modi's rally venue - The Economic Times
What makes the SPG India's finest protection force - Rediff.com
How is the protocol of VVIP security decided in the country?