In law enforcement parlance, they have a concept known as command presence. It's the idea that a police officer should exude such obvious authority that an ordinary citizen will adhere to his command without question.
Stop right there. Come over here. Show me your ID.
What about this bloke? Does he exude command presence for you? If he ordered you to get down on your knees between his legs and put something into your mouth, would you do it without question?