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]
(..) Where's that bonding strip? And another thing, stop with this spaceman thing! It's getting on my nerves! Are you saying you wanna lodge a complaint with Star Command? Okay! Well, so you wanna do it the hard way, huh? -Don't even think about it, cowboy. -Oh, yeah, tough guy? The air isn't... toxic. (..)1995 Toy Story
(..) No one is getting replaced. Now, let's all be polite and give whatever it is up there a nice, big Andy's-room welcome. Buzz Lightyear to Star Command. Come in, Star Command. Star Command, come in. Do you read me? Why don't they answer? My ship! Blast! This'll take weeks to repair. (..)1995 Toy Story