Cop Question

So, what do you call cops when you're having a conversation with them? In Spanish, of course. Officer? Señor? What?

Depending on the situation it could be pendejo........

That would be suicide.

"Estimado señor oficial" should be flattering enough to raise his self-esteem to the maximum level of his sense of full authority and impunity.
You will still be scammed, but he will be more cheerful and polite about it.

That's a good one but is there something maybe not so over the top?

I sometimes stop at crashes if I see the ambulance hasn't arrived yet and it looks bad. If I can stop a bleed, open an airway, or immobilize a neck I might be able to save a life without any equipment. And I need to chat briefly with them. So, what's the equivalent of 'officer'?

I think "Oficial" would work.

Thanks, RVG, I like that better than Señor.