<br/>The Indian Air Force, IAF, on Friday said there is nothing to worry on security front as Army, Navy and Air Force are capable of protecting country's interest in all the adverse situations. Air Chief P.V.Naik said this to reporters in New Delhi on the sidelines of an aerospace medicine seminar. He was responding to queries if the Chinese selling J-10 fighter jets to Pakistan and their plans to launch an intelligence satellite soon was a worry to India. Reiterating India's position that it is not in favour of militarisation of space, Air Chief Naik said that several countries have intelligence satellites and there were several types of satellites in space today and it is not any cause of worry for India.