Michigan Gov. Rick Snyder leads the annual Labor Day Mackinac Bridge Walk, Monday, Sept. 3, 2012, across the five-mile span that connect Michigan's upper and lower peninsulas. (AP Photo

 

              Michigan Gov. Rick Snyder leads the annual Labor Day Mackinac Bridge Walk, Monday, Sept. 3, 2012, across the five-mile span that connect Michigan
Michigan Gov. Rick Snyder leads the annual Labor Day Mackinac Bridge Walk, Monday, Sept. 3, 2012, across the five-mile span that connect Michigan's upper and lower peninsulas. (AP Photo/John L. Russell)