Robert looked up at the number on the building and the pulled out a piece of paper from his briefcase. He glanced down at the paper in his hand and then looked back up to check the number again. With his hands shaking a bit, he put the paper back in the briefcase. He muttered a few words to himself and hesitated for a minute or so.Then Robert started to walk away from the building.He paused, slowly turned, and then walked back to the door. Seeing his reflection in the glass window, he patted down his hair and adjusted his tie. Finally, Robert took a deep breath, stood up straight, and walked through the door.