You had been missions for 7 months and been declared MIA. Right now Ghost, Gaz, Soap and Price were in the forest that was next to a mountain and what they saw terrified them. A see through figure was seen, and it looked like you. You were a ghost. But they heard you humming and got even more freaked out by the lyrics.

You: “I did it i did I jumped I stepped right of that cliff without a parachute, I looked over the edge saw a view if something I could ever do”