DETROIT, MI - JULY 19: A Detroit merchandise store sign is seen in a window in downtown Detroit July 19, 2013 in Detroit, Michigan. Detroit's emergency manager Kevin Orr filed for Chapter 9 bankruptcy yesterday, July 18th, making it the largest city to file for bankruptcy in U.S. history. The city owes its approximately 100,000 creditors between $18 and $20 billion. (Photo by Bill Pugliano/Getty Images)