a result of the drugs he took in Vietnam and the flashbacks that he experienced *908 from the war, he was "messed up" after he left the military. He testified that "tic sticks, cocaine, marijuana, and heroine" were available to him in Vietnam and that this was a problem for a lot of soldiers there, who died as a result of these drugs.
Panisi averred that after he left the military, he had many odd jobs, including working as a cook, a truck driver, a taxi cab driver, and a construction worker. He described himself as a "jack of all trades, master of none."
Panisi was next asked by the prosecutor whether he knew defendant. Panisi indicated that he did. At this point, the prosecutor asked Panisi if he couldsee defendant in the courtroom, and Panisi indicated that he could not. After standing up and looking around the courtroom, Panisi could still not identify defendant. He, however, explained that it has been a long time, about 20 years, since he last saw defendant.
Panisi next testified that in February 1984, he had known defendant for about a couple of months. He stated that he had been to defendant's apartment on Rockwell and Iowa, directly across the street from Archie's bar. According to Panisi, defendant's apartment was on the second floor of the building, which was owned by defendant's mother. Panisi testified that around Valentine's Day in February of 1984 he went to defendant's apartment to buy drugs. While there he saw a naked girl handcuffed to radiator who