Thousands of people flocked to the Straits of Mackinac yesterday for the 57th annual Mackinac Bridge Walk. It’s one of those things that truly brings a cross-section of our state together at one time.Current State’s Kevin Lavery is not a native Michigander, but yesterday, he took another step on his journey towards earning that title. Actually, he took several thousand steps along the five-mile span across the straits. He filed this audio postcard.