Where the evidence for the existence of a firearm during the commission of a crime is solely based in the testimony of a single eyewitness and no firearm is ever recovered, the jury may reasonably find that to be sufficient evidence that the defendant was armed.The 1st District Appellate Court affirmed the ruling of Cook County Associate Judge Neera Walsh.At 4 a.m. on Aug. 10, 2010, R.G. was waiting for a bus to take her to work. She left early to arrive before 6 a.m. Jamaal Charles pulled up in a car to speak to her.R.G …