After a visit to the Raj Ghat in the morning, where he paid his respects to Mahatma Gandhi, the Prime Minister arrived at the Lahori Gate of Red Fort, where he was received by Defence Minister Manohar Parrikar.
He then inspected the Guard of Honour, which this year comprises one officer and 24 men each from Army, Navy, Air Force and Delhi Police.
Thousands have gathered at Old Delhi's Lal Quila Maidan, which has been thoroughly sanitized.
Around 1400 closed-circuit television cameras have been placed in the area -- 250 of them alone in the zone where the Prime Minister will arrive. A special control room has been set up in the area, where hundreds of policemen and the members of the dog squad have been stationed.
In a first, the Delhi Police has used aerial rooftop markings -- alpha-numeric codes painted on select rooftops or roofs of emergency public vehicles, to enable unmanned aerial vehicles, choppers and CCTV cameras installed at high altitude in locating crucial spots.
In his maiden Independence Day speech last year, PM Modi had announced several flagship schemes and initiatives, including the Make in India, Swacch Bharat Abhiyan, Jan Dhan Yojana and Adarsh Gram Yojana.
This year too, the Prime Minister is expected to announce a series of government schemes.