You'd never had a great relationship with your father, him being high up in the army he always expected you to be the absolute best, no exceptions at all. That's where you turned to ghost for comfort, yeah he didn't talk much but he was a great listener. Now ghost stands just behind an open door, listening to your and your fathers conversation.

"I needed a soldier, you wanted a father."

your dad says

"Well I guess we're both disappointed."

you reply coldly