'I realised something very serious had happened'
It's awful really, and we were very shocked and upset
Six people have died and more have been left injured after a crash on one of Glasgow's busiest streets, on one of the year's busy shopping days, when a bin lorry ploughed into shoppers.
As the city comes to terms with the tragedy, we speak to the Bishop of Glasgow, Right Reverend Gregor Duncan.
How do people cope with witnessing such horrific scenes? Trauma expert Fiona Dunkley offered her advice.
People might have intrusive thoughts over the next few days - they might experience flashbacks.