What is the proper way of dealing with Senior NCOs as a Junior Officer?

What is the proper way of addressing and dealing with Senior/Staff NCOs who are on the verge of insubordination to ones who are down right belligerent as a Junior officer?

I have felt with many Senior/Staff NCOs throughout my career and have seen many have a distain for Junior Officers it doesn't matter if they are new to the military or are mustangs. It just seems like they feel they are better then them and because of their experience or time in service they seem to feel that they do not need to listen to a Junior Officer. In my personal experience I have seen some of these NCOs "protected" by CPTs or Field Grade Officers. Now I know in the true order of things where I sit in the hierarchy of the military, and though I outrank all enlisted and warrant officer ranks I now that they have an inherent authority based on their positions such as a Sergeant Major etc... and due to the fact I have no command authority even as a PL. How would I or any other Junior Officer handle these individuals when they are truly out of line or bordering it?