i don't know navy uniform regs but to me it looks like he is a senior chief (E8) with 20+ years of service and a surface warfare badge and a propensity to wear his medals. depends on the situation, but kinda douchy unless its a formal affair. note the guy on his right is not and he's an officer. but its been a long time since i wore a uniform so maybe people do that now.
Do enlisted men get saluted in the navy? He would I guess if wearing a MOH, but he's not....And yes I understand it's the medal, not the man that gets the salute.
His uniform is correct. He's being "piped ashore" on his way to retirement. Nothing out of the ordinary.