The Air Force today said that it is fully geared to counter any threat perception. Talking to newspersons in New Delhi today, the IAF vice Chief Air Marshal P K Barbora said, China should not have any problem with India's upgrading of airstrips in the North-East. The upgradation of infrastructure is for civilian transit as well as other facilities. The IAF vice chief was replying to questions if the Air Force feared adverse Chinese reaction to its upgrading six Advanced Landing Grounds in Arunachal Pradesh for operating heavier transport aircraft. He said, China had a couple of years ago upgraded the Lingzhi air base just 30 km from the India's northeastern border. The Air Force vice Chief said China is also upgrading facilities in Tibet at about 10,000 ft altitude, which is not healthy as the aircraft's performance would be affected at such a high altitude.<br/><br/>Similarly, IAF too was upgrading facilities in high-altitude areas by creating longer airstrips to facilitate heavier aircraft operations from there. He said the IAF-upgraded airstrips in the North-East would be able to operate the C-130J Hercules, six of which it bought from the US recently for India's Special Forces' operations. <br/><br/>AIR correspondent reports, the plan to improve Air Force infrastructure in the states bordering China was taken by Prime Minister Manmohan Singh after the IAF reopened the Daulat Beg Oldi landing strip in Ladakh region last year.