New Delhi, Sept 1 : In response to the US official reports of China deploying nuclear-capable missiles along the borders with India, the Air Force chief said the country was not 'worried' over these developments as it has own plans to deal with the situation. "These are all known, it is nothing that we are worried about. We have our own plans and we are moving ahead with our own plans. These are the realities we have to deal with," Air Chief Marshal NAK Browne said in reply to a query. The Air Chief Marshal was releasing the brochure for the upcoming two-day 6th International Conference on Energising Indian Aerospace Industry beginning from September 22, 2011 in Delhi. The US Pentagon reports have said that the Chinese People's Liberation Army has deployed nuclear missiles along the borders. The Chinese government has, however, denied the US reports. The Indian Navy also denied reports of a London-based newspaper that a Chinese warship had confronted its assault vessel in the disputed South China Sea after it left Vietnamese waters in late July. "The INS Airavat returned from its scheduled official deployment to Vietnam without any confrontation with a Chinese vessel," Navy spokesperson Commander PVS Satish said in a release. When asked what India can learn from China in developing its indigenous aerospace industry, the IAF chief said: "One thing that one could learn from them is that they don't attempt to do everything themselves." "Once you start the Research and Development and then wait and wait, then you make it the test-tube model, it takes you 20-30 years to finalise the project," Browne said. However Browne was of the view that China got a fair amount of technology from outside. He said that Chinese were spending a lot of money on R&D. In case of Indian Defence public sector units the investments in R&D is comparatively low.