CHABUA (Assam): Worried at the increase in Chinese airfields along the border, the Centre is upgrading its infrastructure and fleet strength at all air force stations under the Eastern Air Command. "AFS Chabua is surrounded by 14 airfields on the Chinese side. Not all of them are now being used, but they can be made operational within a week," Commanding Officer of the Chabua airbase, Group Captain M S Venkateswara told a group of visiting newspersons here. Pointing out that the border with China was 170 km north and that with Myanmar 80 km south of Chabua airbase, he said,...