EVERETT, Wash. - A 78-year-old Lake Stevens man running his third Boston Marathon was near the finish line when he was knocked down by one of two bomb blasts. Bill Iffrig says that he heard a noise Monday and found himself on the ground. He says that he ended up with a scrape on his knee, and that a race official helped him to his feet. He was caught in a Boston Globe photograph that quickly went viral. Iffrig says most of the other runners near the area weren't as close to the explosion as he was. He walked across the finish line and another half-mile to his hotel.