everybody knows the idea of a security guard is to have an easy job where you don't really wanna do anything, or have any altercations. in many cases, its so you can sit behind a desk and read, and make the occasional rounds around the building checking and securing doors, and becoming "friends" with the small talk with all the regulars you see.
in the case of the grocery security guard, now what an awesome job that must be. to have to look at and profile possible thieves then casually follow them, kinda pretend not to be following them yet appear to be doing your job. again how awesome. how exciting too.
Again, this is why you do the job, though.
Good job, buddy.
I know I can count on you.