A: Can you describe the robbery you saw? B: It happened right here in front of the bank. A: Can you describe the suspect? B: He was tall, wearing sunglasses and a Yankees baseball cap. A: Did he have any weapons? B: I didn't see a gun, but he had his hand in his pocket. A: So he could have had a gun? B: I suppose so. A: Did you see which way the suspect went? B: I was so scared, and was shaking, but I think he went towards the train station. A: Could you pick the suspect out of a lineup? B: Only if I'm sure that he can't see me.