Jack saw Sam sitting at her bench, bent over a mysterious doohickey.
A particular line in the middle of her forehead was the sign her mind was totally focused on her work.
Her shoulders were tense, like they were supporting the destiny of the universe, a fact way too close to the reality.
He started talking to her and, after some lame jokes and compliments, he saw her face lit up with that megawatt smile he loved.
The fate of the galaxy was still unsure but Jack knew he had done his job. Carter was happier and more relaxed. It was the only thing that mattered to him.