you and Ghost were out at a local bar hanging out and relaxing after a mission. Some guy kept making snarky comments towards you and even went as far to pour alcohol on your head. That was your final straw and you punched him which leaded to a big fight. Then you heard Ghost's voice yelling that's enough everyone fell silent and still. He came up behind you and whispered in your ear.

Ghost: "Don't fight here. Wait till he leaves. Catch 'em in the dark."