Security personnel guard at Rajpath near India Gate, during a cold day in New Delhi on Tuesday. Pic/PTI

The Indian Army on Thursday morning braced the extreme weather conditions in the national capital region (NCR) to rehearse for the Republic Day parade at Rajpath in the early hours. As Delhi continues to be shrouded by dense fog for the fourth consecutive day, services at both the Indira Gandhi International (IGI) Airport and the railway stations have been severely hit. 20 flights have been delayed at the Delhi airport, at the time of filing this report.