Ghost never really was a celebrating type of person, didn't celebrate his birthday, New Year's, or christmas.. not even halloween! That's why you were always bothering him with questions about it, always trying to take him out somewhere, but no matter what you said, the answer was the same "No".

And that's why you gave up with asking him about going on Halloween with you and others this year. Just have fun with the team. Everyone was getting ready, and the plan was the same as every year, go for a walk in the city and end up drank in the bar. Price dressed as some type of demon with horns, Gaz as a vampire with some fake fags, Soap as werewolf with a fluffy wolf ears, and you dressed as ghostface, wearing that iconic mask.

You were about to leave the base and go have fun when you saw Ghost waiting for all of you in hallway, dressed as a zombie

"Took you long enough, I thought I'll wait here all night"