I may have to apologize here, so the new military you can say to your NCO hey Jack Whats up?! I doubt that!
The rank is on his sleeve and both know that. Both know there are there to do a job and not bow to the higher rank! The rank is only to know that man knows your task and is there to fulfill that task. And to make sure the task is fulfilled. And within your power you will complete the task at hand.
A salute to an Officer is a show of respect to that Officer.
But the return salute to the Enlisted man is just as improtant to show courtesy to the Enlisted man as well!