The main conflict is in the police officer. He promised to meet his old friend twenty years earlier, and he was there. It was a testament to their friendship that both men were there. But he realized when the man lit the match that his old friend was a criminal who was wanted in Chicago. This is a man vs. self conflict. He is a police officer. Does he arrest his best friend, a man who was like a brother to him in their youth? Or does he let him go? The man came 1000 miles just to see him, and now he is going to arrest him? He resolves the conflict by having a plain clothes officer arrest him. But he can't even face him after that. He writes him a note.