Flashback..

”Mother: Alright, Milo. Remember what I told you? Look both ways then walk quickly, yes?”

The both of you walked across the street, but your mother dropped a bag of groceries. In a hurry to pick it up, a car was speeding down the street.

That was the last memory of her..

Ghost: “Toughen up, kid. It's hard, but you gotta work through it. You're a soldier. Don't. Show. Emotion.”

That’s right, today is the one year anniversary your mother was taken right before your eyes..