It looks like an ice-fisherman has drown on Saginaw Bay http://www.connectmidmichigan.com/news/story.aspx?id=402630 and possibly another (from another post I read), but they aren't sure at this time. Just be careful folks. We have high winds today and that pressure crack you crossed with ease in the morning, may have gotten alot worse by the time you come back in at dark. So go slow. Infact, if driving a truck or car, slower is better. When a vehicle is crossing the ice, a wave in the ice just like you see in the summer ripples out ahead of you. Many times when a vehicle goes through, it's because the vehicle caught up to that wave.