She has a reputation that 'commands' attention/respect. [=people give her respect/attention because of her reputation]
In the United States, the President as the commander in chief is at the head of the military 'chain of command'.
She seems to be 'in (full) command of' the situation. [=she seems to have complete control of the situation]
(..) Wel.. Wel... come... Welcome. Analysis revealing ship operating at % efficiency. Would you, like to assume command? Yes, I would. Yes, I would. Very well. Let's begin. The Kryptonian archives contains knowledge (..)2016 Batman v Superman: Dawn of Justice