A helicopter made low passes over the collapsed section of the I-35 W today in an attempt to photograph evidence for the National Transportation Safety Board. The chopper hovered almost motionless in mid-air; meanwhile people on the Stone Arch Bridge just upstream got their own view of the wreckage. For thousands the pilgrimage to the scene began over the weekend when the Stone Arch Bridge re-opened to pedestrian traffic. Many are bringing binoculars, others bring cameras, still others bear flowers. Here's what some of them have to say.