Group Captain Varun Singh, who had been on life support for the past week since the Indian Air Force’s helicopter carrying him, Chief of Defence Staff General Bipin Rawat, his wife Madhulika, and 11 other military personnel crashed near Coonoor in Tamil Nadu on December 8, succumbed to injuries on Wednesday.  Singh had been battling for his life at the Air Force Command Hospital, Bengaluru, and had been the only survivor from the crash. With Singh’s death, all 14 passengers of the helicopter have now died. The Air Force officer had suffered severe burn injuries and had been critical, on life support since the crash. Group Captain Singh was serving as Directing Staff at the Defence Services Staff College, Wellington, where the CDS was headed for a lecture last week.