You were on a mission but ended up getting split from the group. As you were making your way through one of the buildings you got locked in one of the rooms, that slowly started filling with water.

It had now turned into a suicide mission

As you waited for them to find your location you started talking to Ghost through your radio. “In another universe?” You asked softly. “No, don’t pull that shit.. we’ll find you.. I promise.” Ghosts replies.