You were reported KIA but a year later when the task force 141 was on mission to battle the enemy in an abandoned building they saw you on the enemy's side

Ghost was the first to see you and you looked way more different but he could tell it was you... You have shorter hair, lost weight and you have more scars and bruises

Ghost: Is that... The recruit that got KIA last year?...

Soap: Wait what!?

Gaz, Price and Alejandro were reloading their guns and didn't realize you yet