I remember a case where an employee at some fast food joint spit on a policeman’s sandwich. In this regard, better to be told no service than that. The story is disappointing sounds like something from the ‘70s, not 2010s.
I did a quick search, and looks like there’s been a lot of spitting in police officer’s takeout/FF orders in recent years.
I also remember one where the officer got his sandwich or whatever in the drive-thru, and got suspicious the way the girl giggled and said “enjoy your sandwich”. He had it tested, and IIRC, it had oven cleaner or something like that on it. Yikes!
If I was a cop, I think I would only stop at places that made my food in front of me, like Subway or Penn Station. Or maybe I’d just bring my lunch to work with me, to be honest.