Indian Air Force Chief Arup Raha today backed former IAF Chief S P Tyagi who is presently in the CBI net in connection with the Agusta Westland case and said that he must be given his due till charges against him are proved. He said, the former air force chief is like an extended family member and the air force should stand by him. <br/><br/>Addressing media in New Delhi 2 days before demitting office, Air Chief Marshal Raha asserted that IAF would not have any sympathy against Mr Tyagi once he is found guilty. He said, the air force believes that law of the land should take its own course and once the probe is complete the court verdict should be respected.<br/><br/>Mr. Raha described the disappearance of the AN32 flight in July, the Pathankot Air Base terror attack, the One Rank One Pension agitation and the anomalies in the 7th pay commission as setbacks. Raha added that IAF has learnt lessons and are better prepared now.<br/><br/>The Air Chief Marshal said, the Air Force has done reasonably well in looking after the sub conventional threats like terrorism.<br/><br/>He said, there a need of at least 200 more medium-weight fighter aircrafts in five to ten years. The Air Chief Marshal informed that new tenders will be issued soon for more mid-air refuellers as it is a strategic need. He said, large numbers of radars which are indigenous have been inducted and the Air Force is well on its way to have network centric capabilities. The Air Chief also said that they have upgraded the Advanced Landing Grounds in the northeast.