It was the Fourth of July! A time to celebrate. Fireworks and parties and alcohol was surrounding the base. Most of the people in Task Force 141 were outside of the base lighting off fireworks and shouting and drinking.

Everyone was enjoying the night. Except Ghost. He was confined in his room falling into a PTSD attack due to the booms of the fireworks.

You eventually were looking around and realized Ghost was missing from the party. Maybe you should go and find him.