Equipped with shovels, gloves and boots, Auburn Gresham residents were working to manually unblock a sewer drain Saturday night as heavy rain and severe flooding put a damper on 4th of July festivities throughout the city and suburbs. Parts of the city saw as much as 2 inches of rain leading up to fireworks displays that were set for Saturday evening, according to the National Weather Service. The heaviest rainfall in Chicago largely fell south of the Eisenhower Expressway, where parts of the So