(CNN)Mike Glasgow has been quick to admit that there are things he could have done differently. Flint, Michigan's, city utilities manager was among the first to be criminally charged for his role in the water crisis that has deprived the city of clean drinking water for two years. Prosecutors say he altered a water quality report that could have raised red flags about the lead issues in Flint months before it became public. He's accused of neglect of duty and tampering with evidence, both felonies that could lead to prison time. "I was a key figure in this -- I am operating the treatment plant and seeing some of the sampling," he told CNN in March, before the charges were filed. But Glasgow...