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]
(..) - You can get rid of her. - All right. Get down! Let's go. Come on! Additional security teams, report to mobile command Level . Beatrice! - Mom? Mom! - Beatrice. Okay. Okay, we gotta run! (..)2014 Divergent