Coffin tells CHSJ News when the explosion happened he was on the subway having already finished the run but he was toying with hanging around the finish line to watch the Saint John runners.
He says he was at the Arlington Station near Boylsten Street very close to the spot where the second explosion went off and he was very much 50/50 on whether he would get on the train or stay at the finish line.
Coffin has run the Boston marathon 6 times and says he'll take part again adding he expects organizers will be very serious about security next year like it was after 9/11.
