As part of the ‘Har Ghar Tiranga’ campaign to mark the 75th year of India’s independence, Projection mapping was done at DRDO headquarters on August 14. ‘Har Ghar Tiranga’ is a campaign under the aegis of ‘Azadi Ka Amrit Mahotsav’ to encourage people to bring the Tiranga home and to hoist it to mark the 75th year of India’s independence.