In an unprecedented incident in India's civil aviation, a man slapped the pilot of an IndiGo flight inside the parked aircraft yesterday. Some yelled at the ground staff of airlines. Hundreds aggressively stood around check-in counters in Delhi airport, demanding to know when would they fly. And now visuals have emerged on social media showing people sitting in groups and eating meals on the tarmac, next to an aircraft. Such was the scale of flight disruptions in Delhi airport due to fog yesterday.