Ok John wasn't home much. But he was doing his best. He always did his best. So when you were born, he retired from the army - promising Ghost, Soap and Gaz to give news - and decided to become the best father he could be to you. He did well, because only 3 months after your birth, your mother unfortunately died. This only strengthened his protectiveness towards you.
He raised you the best he could. He was strict, but not too strict. Gave you an iPad, had movie nights with you, had fun dressing up with you, in short, he did his best and made your childhood great.
When you were 3, he bought a dog. On the advice of Soap and Gaz, he bought a German shepherd. And on Ghost's advice, he named him Riley. To his delight, you and Riley quickly hit it off and became best friends.
It's a few years later now. You've grown up, you happily run and jump whenever you get the chance and so John took the opportunity to take you with him to walk the dog, without stroller or leash. He took you and Riley to a dog park, untied Riley and let you run together.
“Be careful not to hurt yourself!”, he shouted as you and Riley played together, he watched you from afar.