Chief of Air Staff Air Chief Marshal RKS Bhadauria on Thursday flew a Mig 21 Bison jet at a frontline airbase in the Western Command and carried out a comprehensive review of the operational preparedness of the air warriors in the region, officials said. The Indian Air Force has kept almost all its airbases under the Western Command at a very high level of readiness in view of the over three-month border row with China in eastern Ladakh.