State-appointed Emergency Manager Kevyn Orr, left, and Mayor Mike Duggan are seen during a news conference in Detroit, Tuesday, May 27, 2014. Removing blighted residential properties, lots and vacant commercial structures that have plagued Detroit neighborhoods for decades would cost $850 million, a task force said Tuesday. Blight has "gone on for years" without a "real strategy" and has gotten worse as a result, said Duggan. Orr called it an unprecedented effort. For the first time in Detroit's history, there is a "comprehensive proposal to analyze all the properties in 144 square miles in the city," Orr said. (AP Photo/Carlos Osorio)