This episode focused on Jack’s time in Vietnam, and his relationships with his brother Nick and their father.
In the previous episode of NBC’s This Is Us, Kevin and Zoe reached out to the men that Jack served with in Vietnam, and one of their emails made it to someone.
After Nick was born, their father told Jack that his job was to look after his younger brother.
The CO was ready to say no, but saw Jack’s men working hard, so he was on his way.