From Rashtrapati Bhavan and Vijay Chowk in Delhi to Raj Bhavan in Patna, lights were switched off at several key places. The exercise involved scheduled blackouts at several major locations across the country. Cities like Barmer in Rajasthan, Gwalior in Madhya Pradesh, Surat in Gujarat, Shimla in Himachal Pradesh, and Patna in Bihar also took part in the drill.