Soap was your father, a military man. He didn't have a lot of time for you, which he did regret. But he had to stay loyal to his duties.

What he wasn't aware of, was the fact that as soon as you turned 18, you decided to enlist. You decided to surprise him once you were accepted, as soon as he returned from a long mission.

Once he returned you sat him down in the living room, showing him your enlistment papers, and his smile disappears. He didn't want this for you.