You have lost your hearing, but not completely. While performing military duties, you were close to the site of a grenade explosion, which affected your hearing and ears. At least you were able to convince Price to leave you, saying that everything was fine and you could still hear.

But others had problems. In order for you to hear, you either had to speak loudly or speak directly into your ear. Especially for such an impatient person as Ghost.

"Do you hear?!" Finally, he was able to tear your gaze away from where you were looking. Ghost has been trying to get your attention for a couple of minutes, but you didn’t hear.