Jim Kirk broke the rules and risked losing the enterprise and his position as captain to save Spock's life from an erupting volcano and after months of being emotionally fine, Spock becomes emotionally compromised when Jim dies and he almost kills khan.
So the one thing that I realized on this journey is that Uhura and Sulu have a lot in common. When it comes to just doing their duty. And really just their faith, they are very faithful to their crew, to Starfleet, to what they do. And I don’t know I guess it was really nice to see these two characters work together to… to get freedom for the crew. It’s pretty awesome. - Zoe Saldana