Mayor Rahm Emanuel on Friday defended the way he has dealt with the city's looming financial crisis against attacks from his challengers, touting his record of crafting the city's budget during his first term but refusing to rule out a property tax increase to deal with huge upcoming government worker pension payments. The back-and-forth took place at the Chicago Sun-Times editorial board endorsement session, the second time all five mayoral candidates appeared face to face. City Hall has a looming $550 million payment to make to shore up police and fire department pensions, and 2nd Ward Ald. Bob Fioretti called...