Prime Minister Narendra Modi on Wednesday unfurled the national flag at the Red Fort here on the occasion of India's 72nd Independence Day.Dressed in a white kurta and a safa (turban) of a similar hue tinged with orange and green, he unfurled the flag at the 17th century monument amid a 21-gun salute.Modi was received at Lahori Gate of Red Fort by Defence Minister Nirmala Sitharaman, Minister of State for Defence Subhash Bhamre and Defence Secretary Sanjay Mitra.He then reviewed a tri-services guard of honour.This is Modi's fifth speech at the Red Fort since he became the Prime Minister.