<span style="color: #222222;">Indian Air Force has asserted that it is in a high state of preparedness to pro-actively engage any perceived threat in the present security scenario. </span><br />'' <br />'' <span style="color: #222222;">In a statement, the IAF said, a strict vigil in the skies is being maintained to detect and thwart any act of aggression from Pakistan Air Force. </span><br />'' <br />'' <span style="color: #222222;">Citing a document of Pakistan's civil aviation authority, the IAF said, the neighbouring country has opened its airspace with Oman, Iran, Afghanistan and China only and the 11 entry and exit points located along Indo-Pak airspace are still closed.</span><br />''