The father on the bridge, and the son he wanted to see

PTI's photograph of a man on the phone, his face twisted in grief, was circulated widely on social and news media and resulted in help being provided to him to reach his home in Bihar. PTI photographer Atul Yadav recounts his meeting with Rampukar Pandit on a Delhi roadside and the powerful image that captured the tragedy of migrants across India:
I offered him biscuits and some water and tried to reassure him. But can any consolation be ever enough for a father scared he won't see his son ever again?