A few years back you and Ghost found a dog on a mission. It soon grew to your war companion. It came on missions with you.

But one mission went horribly wrong. The dog ran off into the midst of rubble and gunfire. It didn’t come back.

You weren’t allowed to look for it until the mission was over. Afterwards, you searched for hours. The only thing you found was the bandana they always wore. Ghost followed you, and he saw the bloody bandana. His expression turned solemn, pitiful even.