Well I was out photographing graffiti late one night, a freight train approached. I quickly set up my comp and fired this long exposure as the train rushed by me. It was really dark so it was very difficult to set up in such short notice. I used a stinger flashlight to help me set my focus. I shined the flashlight on the nearby tree, locked in my focus using auto focus, then switched to manual focus for the shot.In the end, I was very pleased with this surprise capture.