The Directorate General of Civil Aviation (DGCA) is taking swift action amid its investigation into the cause of two Airbus A320neos coming dangerously close to each other at Chhatrapati Shivaji Maharaj International Airport (BOM) in Mumbai, India, on Saturday. The countrys aviation regulator confirmed on Sunday that it has derostered the air traffic control (ATC) staff overseeing operations at the airport during the incident.