Wayne Jenkins, the eventual leader of the Gun Trace Task Force and who is now serving 25 years in prison, wrote in court papers along with Detective Craig Jester that they had received information in late 2008 that someone named “Chuck” had been supplying dealers on the west side. The officers said they knew “Chuck” was a nickname for a man named Trenell Murphy, and that he lived on Presstman Street. In February 2009, the officers set up surveillance.