How do you handle unprofessional behavior by somebody senior to you?

Brothers/Sisters,<div><br></div><div>This has been bugging me ALL DAY. This morning, prior to first formation, my detachment was standing outside talking. Some of the members in our company stay in their vehicles listening to music until the company starts to form. A member (E-5) on another team was in his car, listening to music (which was not in violation of Ft. Bragg regulations, you couldn't hear the lyrics nor was there any bass). Out of nowhere, I hear "HEY!" and turn around to see a senior noncommissioned officer (E-7) yank open the E-5's &nbsp;car door, screaming at him "TURN THAT S*** DOWN!", then leans over him inside his car, turns down the radio, and slams his car door as hard as he can, in view of the entire company (except the 1SG or CDR).&nbsp;</div><div><br></div><div>That being said, I maintained my military bearing, went to my Detachment Sergeant and explained the events that unfolded. I also spoke to the E-5's Team Leader as well. They said they would talk to the E-7, and that was it.</div><div><br></div><div>Here is my question. I can't help but put myself in my peer's shoes, and imagine how I would have reacted to someone doing that to me. They say "do what you think your rank can handle", what would you have done in both my position observing the incident, and the other NCO's position that had this done to him?</div>