Michigan Gov. Rick Snyder greets volunteer Georgia Prillwitz of Mackinaw City at the end of the annual Labor Day Mackinac Bridge Walk, Monday, Sept. 3, 2012. Prillwitz was passing out c

 

              Michigan Gov. Rick Snyder greets volunteer Georgia Prillwitz of Mackinaw City at the end of the annual Labor Day Mackinac Bridge Walk, Monday, Sept. 3, 2012. Prillwitz was passing out c
Michigan Gov. Rick Snyder greets volunteer Georgia Prillwitz of Mackinaw City at the end of the annual Labor Day Mackinac Bridge Walk, Monday, Sept. 3, 2012. Prillwitz was passing out certificates to anyone who walked across the five-mile span that connects Michigan's upper and lower peninsulas. (AP Photo/John L. Russell)