General Bipin Rawat, India's first Chief of Defence Staff, and his wife died on Wednesday after a military chopper crashed in Tamil Nadu, killing 13 on board. The only survivor, an Air Force Group Captain, is being treated for severe burns. "With deep regret, it has now been ascertained that Gen Bipin Rawat, Mrs Madhulika Rawat and 11 other persons on board have died in the unfortunate accident," the Indian Air Force (IAF) tweeted.